Defective iphone 12 Pro Display in apple service center

I have replaced the display on my iPhone 12 Pro twice at the Apple service center because the receiver stopped producing sound. Each time, the issue reappeared after about 120 days. I informed them that the new display they installed has a receiver issue, but despite seeking help from both the Apple service center and customer care, I have not received a satisfactory solution.

As a loyal Apple customer, I am deeply disappointed by this recurring issue and the lack of effective support. I rely heavily on my iPhone for communication, and this persistent problem severely impacts its functionality. I request your urgent attention to this matter and a lasting solution to the receiver sound issue.