How do I make a complaint.

Click ▶︎ Product Feedback. 

Apple removed the web methods for reporting issues with sales, service, or support several year ago. The is no email or web-based method that works for the today. The product feedback links are not the answer. Too many bug reports and "I wish you'd add..." messages. Yours would likely never reach a person in authority.

The only effective ways to do this any more are definitely old-school: a phone call or, hugely better, a well-crafted business letter sent certified mail/return receipt requested.

The chances of a phone call getting directed to a responsible party are far lower than that of a business letter. for ten years I ran support for a large manufacturer and always preferred the letter. Phone calls got misdirected, too often needed call-backs, and often the contact was never completed.

On the other hand. a business letter gave me time to review the issue and interview the employee involved before answering. Whether an "atta-boy" or "oh no!" letter, I always routed them to the employee's personnel file in case it was needed at review time.

https://edu.gcfglobal.org/en/business-communication/how-to-write-a-formal-business-letter/1/

Then, beyond what has been offered, you cannot find more help here. We are your fellow end users with no special lists of Apple internal contacts. Your issue is far beyond the scope of these user=to-user forums yet we have told you all we know to do.