MTS / Sistema Shyam TeleServices [SSTL] — Full amount paid still getting threatening message from mts

Address:

560008

Hi,

I have closed my MTS connection long back. They have taken weeks time to close the connection from date of closing request and for that also they have charged. Still I have cleared the amount 13 days back. There is on Manager by name Mr. Raghavendra from whom I have received mail to clear the amount, after clearing the amount at Sistema Shyam TeleServices, I reverted him back to stop sending messages. But still no change and whenever m calling them they will say amount still not paid.