Airtel — deducted balance for no reason

Address:

Mumbai City, Maharashtra, 401203

My name is suraj

My sim was lost in past 2 months before and now on 29 july 2018 i purchased same number of sim from airtel gallery and my balance was not added in my sim
And i make call to customer care then he said that i used game arena service in 19 june and i lost my sim before that and the service man name is nilesh he repeatedly said that i used that service but i m not and he was not ready to listen my any complaints and they also not refunding my balance so please help me with that else u will lost your 1 customer...