Airtel — excess bill charged

Address:	Raigad, Maharashtra, 410218
Website:	Airtel

My relation ship number is [protected]
I have received a bill on 21st december 2018 for the period from 20th nov to 19th dec of rs.2854
In which it is written that i have made sms of rs 1600 from my number [protected].
I have checked that bill and the numbers also.. We have not done any sms from that number.
All the messages were done with in the gap of 20 mins continuously from day to whole night which a normal man cannot do. Please check the bill there is some error while generating bill.
I have called customer care also for the same thing.. But they are not listening any thing.
I have not done any messages so i cannot pay that amount.. Please check it rectify the bill and wave off excess bill amount. I have called many times to your customer care executives but they are not listening and continuously forcing me to pay the amount. They cant even send me itemised bill of m no: [protected]
Kindly do the needful at the earliest. I have attached bill copy for your reference.