Mi Service Center Barabanki - Fraud of MI Service Center A K Telecom floor Rashid Enclave Mugal Darbar Barabanki

I went to mobile repairing due fall in water after he said that there are many fault on your mobile, you can submit your phone on center then I am with him then when I'll collect my phone He is saying that your main board of change by another one and this is not your (***/*) this is (**/*) while submitting my phone my main board of is (***/*) when I'll collect he said that this is not (***/*) he will be changed my board another during I'm not present. it is also not match my previous IEMI no. I have also complaint on MI helpline which is complaint no is: woin************** so please sir help me out because how can I trust if service center happening this thing.