how to send a complaint email to apple?

Part 1 of 2

For you Complaint Submission to Apple 

Apple

One Apple Park Way

Cupertino, CA 95014

Dear Apple Customer Support,

I am writing to formally request escalation of an unresolved technical issue involving my MacBook Pro and to request a substantive review of the support provided to date.

On September 18, 2026, following the installation of macOS 27.0, I began experiencing the following issue on my 16-inch MacBook Pro:

“Contact Application Not Responding”

Since September 18, I have contacted Apple Support on multiple occasions regarding this issue. Despite these contacts and the troubleshooting undertaken, the issue remains unresolved.

I recognize that some software issues may require investigation beyond the initial level of technical support. My concern is that, after multiple contacts, I have not yet received either a resolution or a clearly defined escalation path for determining the cause of the problem and identifying an appropriate resolution.

I am therefore formally requesting that this matter be escalated for further technical investigation by an appropriate senior technical-support, specialist, or engineering-level team, as applicable.

I would also appreciate a substantive response addressing the following:

Whether Apple has identified a known cause or condition associated with this issue.

Whether the reported behaviour is known to occur with macOS 27.0.

What additional diagnostic information or testing Apple requires from me.

What specific steps Apple recommends to resolve the issue.

If a resolution is not currently available, whether the matter can be formally escalated for further investigation and what the next stage of that process will be.

My computer is a 16-inch MacBook Pro running macOS 27.0.

I can provide all relevant Apple Support case numbers, dates and details of my previous contacts with Apple Support, screenshots, diagnostic information, and any other information required to assist with the investigation.

I am requesting that the history of this matter and the troubleshooting already undertaken be reviewed so that I do not have to repeat troubleshooting steps unnecessarily. I would also appreciate confirmation of the appropriate escalation and the next steps Apple intends to take.

Thank you for your attention to this matter. I look forward to receiving a substantive response and to having the issue appropriately investigated.

Sincerely,

[Your name]

[Apple Account email address]

[Apple Support case number(s)]

Part 2 of 2

For the “Contacts Application Not Responding” problem, first restart the Mac and test Contacts. 

If the problem persists, start the Mac in Safe Mode and test Contacts. 

While in Safe Mode, launch Contacts and determine whether it becomes unresponsive. Apple explains that Safe Mode can help identify whether software loaded during startup is contributing to a problem.

If Contacts works in Safe Mode but not during a normal startup, this provides useful diagnostic information.

If the problem occurs in both modes, check whether any macOS 27.0 software update is available. 

Apple recommends installing available updates when an application is not working as expected. Apple Support — If an app on your Mac stops responding

The Contacts application should then be tested with its configured accounts considered separately. 

Contacts can use iCloud as well as other internet accounts, including Google, Yahoo, Microsoft Exchange, and other supported accounts. 

If multiple accounts are configured, temporarily disable them one at a time and test Contacts after each change. 

This can help determine whether the problem is associated with a particular account or its contact data. Apple Support — Change Accounts settings in Contacts on Mac

If the problem continues, test Contacts from a different macOS user account. 

If Contacts works normally there, that would help isolate the problem to the original user environment rather than necessarily to the Contacts application itself.

If iCloud Contacts is being used, also verify that Contacts is enabled in iCloud and that the contacts are accessible through iCloud.com. Apple Support — Set up iCloud for Contacts on all your devices

There is not complaint email address for you to use. You can:

• Send a letter to their Corporate Office:

Apple

One Apple Park Way

Cupertino, CA 95014

• Escalate the matter through Apple Support

Contact Apple Support - Apple Support

• Schedule an appointment with an Apple Store for a resolution

Genius Bar Reservation and Apple Support Options - Apple

To further troubleshoot the problem you are experiencing I can recommend 2 things:

• Go to Settings > [name on top] > iCloud > See All, and turn off Contacts. Then launch the app again to see if the cache gets rebuilt. Go back and turn on Contacts to see if that resolves the problem.

or

• Open a Finder window and choose the Go menu, followed by Go to Folder. In the text box enter the patch below and don't forget the "~" character at the start. In the location that appears drag the AddressBook folder temporarily to the Desktop to see if the file is corrupted. You can then drag it back after that test if there is no change.

~/Library/Application Support/

you can also provide them with feedback

Product Feedback - Apple