Overview

CallZero.ai is an AI assistant service designed to handle customer service calls on behalf of its users, providing a solution for those who find such calls time-consuming or frustrating.

Users direct the AI who to call, providing information on the purpose of the call, whether it is booking a reservation, disputing a charge, or scheduling an appointment.

Using advanced voice technology, the AI then calls the specified number and carries out a natural conversation to handle the task at hand. After the call, users receive a detailed summary, including key information, the necessary next steps, or decisions made during the call.

Users can also monitor the status of their requests in real time. CallZero.ai has multiple specific functionalities, such as canceling unwanted subscriptions, making appointment bookings, resolving refund requests, collecting price quotes, navigating customer service systems, and tracking orders.

All user information is encrypted and protected as privacy is highly prioritized.

Releases

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Initial release

June 2, 2025

Zhenzhen Guan

wrote:

Initial release of CallZero.ai.

Zhenzhen Guan

@zhenzhenguan

Stats

1 tool

2karma

Beginner

Joined: April 2025

Pricing

Pricing model

Free Trial

Paid options from

$4.99/month

Billing frequency

Monthly

Free trial duration

7 days

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2,252

3.3(3)5

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Reviews

3.3

Average from 3 ratings.

★ ★ ★ ★ ★ 1

★ ★ ★ ★ 1

★ ★ ★ 0

★ ★ 0

★ 1

Comments(5)

Hinchey Huang

🙏 15 karma

Aug 10, 2025

Rated it

Thanks to using CallZero, I was able to negotiate my medical bill from over $500 down to just $125. It really helped me save big—and relieved so much stress!

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Jeremy

Jun 4, 2025

Love the premise but bummed it only works for USA numbers. I have a customer support challenge in France with SNCF and would love to outsource it!

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RyKo Media

🙏 2 karma

Jun 5, 2025

Not sure if this will work but you can try to use a free VOIP number, like google voice, and have it forwarded to the international company you want to call.

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Vincent C

🙏 25 karma

Jun 2, 2025

This is amazing! I just used it to lower my monthly car insurance for 70 dollars a month

171 Reply Share Delete Report

Zhenzhen Guan

🛠️ 1 tool 🙏 2 karma

Jun 2, 2025

That’s awesome to hear! If you ever have feedback or ideas, we’re all ears.

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Pros and Cons

Pros

Handles customer service calls

Detailed call summary provided

Real-time request monitoring

Unwanted subscription cancellation feature

Appointment bookings capability

Resolves refund requests

Collects price quotes

Navigates customer service systems

Order tracking functionality

User information encryption

Priority on privacy

Advanced voice technology

Automated task handling

Reduced stress from calls

Time-saving

Navigate complex phone trees

Helps avoid awkward conversations

Cancel, reschedule appointments

Handles billing disputes

Simplifies price quote collection

Streamlines customer service navigation

View 16 more pros

Cons

No multi-language support

No text-to-speech adjustment

Dependent on call recipient's cooperation

Possible misunderstanding of complex tasks

No live operator backup

Privacy concerns despite encryption

No API integration offered

Functionalities limited to provided categories

No distinction between market/client types

Inefficient for urgent issues

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AI Voice Calls

Jason Feimster

Q&A

What is CallZero.ai?

CallZero.ai is an AI assistant service that handles customer service calls on behalf of its users. It engages in tasks such as booking reservations, disputing charges, and scheduling appointments based on the user's instructions.

How does CallZero.ai work?

Users tell CallZero.ai who to call and the purpose of the call. CallZero.ai then uses advanced voice technology to call the specified number and carry out a natural conversation to handle the task. Users receive a detailed summary after the call, and they can monitor the status of their requests in real time.

What functionalities does CallZero.ai offer?

CallZero.ai offers a variety of functionalities including handling customer service calls, scheduling, call handling, order tracking, appointment booking, subscription management, refund resolution, and real-time monitoring. Moreover, it provides users with summary reports after each task.

What types of tasks can CallZero.ai handle?

CallZero.ai can handle a variety of tasks such as canceling unwanted subscriptions, making appointment bookings, resolving refund requests, collecting price quotes, navigating customer service systems, and tracking orders.

Can I monitor the status of my requests in real time with CallZero.ai?

Yes, with CallZero.ai, users can monitor the status of their requests in real time.

Is my information safe with CallZero.ai?

Yes, your information is safe with CallZero.ai. All user information is encrypted and protection of user's privacy is highly prioritized.

+ Show 14 more

How does CallZero.ai use voice technology?

CallZero.ai uses advanced voice technology to engage in natural conversations on behalf of the user, in order to handle the specified task.

Does CallZero.ai provide a summary after the call?

Yes, CallZero.ai provides a detailed summary after the call, which includes key information, necessary next steps, and decisions made during the call.

Can CallZero.ai handle refund requests?

Yes, CallZero.ai can efficiently handle refund requests.

Does CallZero.ai cancel unwanted subscriptions?

Yes, CallZero.ai can cancel unwanted subscriptions.

Can CallZero.ai navigate complex customer service systems?

Yes, CallZero.ai can navigate complex customer service systems.

Can CallZero.ai help with price quotes and order tracking?

Yes, CallZero.ai can both collect price quotes and track orders.

Does CallZero.ai handle appointment booking?

Yes, CallZero.ai can handle appointment bookings.

Is the service of CallZero.ai encrypted?

Yes, the service offered by CallZero.ai is encrypted to ensure the highest level of security.

How does CallZero.ai prioritize user privacy?

CallZero.ai prioritizes user privacy by encrypting user information and taking steps to ensure the user’s privacy at every step.

Can CallZero.ai dispute charges on my behalf?

Yes, CallZero.ai can dispute charges on behalf of the user.

What kind of conversations can CallZero.ai carry out?

CallZero.ai can carry out a wide range of conversations, whether it's for booking a reservation, disputing a charge, or scheduling an appointment. It uses advanced voice technology to carry out these conversations naturally.

Does CallZero.ai provide any notifications when tasks are completed?

Yes, CallZero.ai provides notifications when tasks are completed.

Can CallZero.ai call any specified number?

Yes, CallZero.ai can call any specified number provided by the user.

How is the user feedback about CallZero.ai?

User feedback about CallZero.ai is positive, with users reporting saving significant time and reducing frustration with phone calls.

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CallZero.ai

Overview