Paytm - I dont have any active device at my end but they are charging me rent for same from last 2 years

Hello,
There reason Why I have to raise complaint against paytm is as follow.

I was running shop in pune area, I need paytm device for card payments, so i requested for that, the executive of paytm come to my shop with device for installation
But that device having some technical problem.. It's not working so he get back that device to his office ( paytm)

Next day he came with another device which was working properly and gave it to me.
And so it seems like normal
But then because of some problems I choose to close my shop..... So i returned that device to paytm
At that time i get to know that
I was charged by paytm for * card devices.
I returned that device on that day & raise complaint in paytm but no one will respond Or help me on that
From last * years I was talking with their executive, manager, support team
But no one helping with that


The matter is very simple.... It's fault of their executive who register that damage device to my account
And take that device to their godown
I dont have any device but they just giving me rubbish resons all the time

I have the evidences related to that and other proofs too.

Please help me out