My top front speaker on my iPhone 12 isn’t working. Do you have a solution?

I was wondering if anyone has run into this or has any solutions. I live over 100 mi from the nearest Apple store.

I have an iPhone 12 and one day my top speaker stopped working. Pretty embarrassing to have to make any phone calls because they have to be on speakerphone. I took it to a repair shop. He can’t touch it. Anyone have any experience with this issue?