iphone 13 ear speaker not working

i have an apple iphone 13 user since 9 months and which is in company warranty suddenly my ear speaker is dead no voice is comming from ear speaker and when i took the iphone in company service centre they checked the device and told me that the device sound speaker was tempered by me and refused the device saying that it will not repair in warranty, you will charged for the display.

the company service centre (F1 info) at patna is redicullas whose wait me for 1-2 hr and after that they say it will not repair in warranty.

very poor service centre...