Popping noise MBP 15” 2016

My MBP 15” with touchbar and touch ID 2016 have a popping noise when i Started to used it and while i’m using its . I have took my MBP to AASP in my country but they said “ We don’t know how to claim this problem and try to change the screen “ . How can i do with this problem ? It’s popping many times while i’m using its and i have took MBP to AASP many times but they couldn’t fixed its.