MTS / Sistema Shyam TeleServices [SSTL] — Unauthorised bill claim

Address:	New Delhi, Delhi, 110043
Website:	www.mtsindia.in

Dear Sir,

My Name is Abhishek and I had procured a post paid MTS Dongle ([protected]) for the use but due to bad service asked the customer care executive to close it and send any executive to pick it back. BUt they neither closed it nor picked and send a bill of with legal notice of non payment of amount Rs. 2355. For Which I Made the Payment and closed the connection, dated 18 Jan-2016, But Now again I am getting a call that i have to pay Rs. 103 as closure charges. And this was not done with transparency during selling of dongle. Due to this, I am getting regular call from MTS executive .
Request you to suggest the way forward.