MTS / Sistema Shyam TeleServices [SSTL] — mts postpaid service disconnection

Address:

712258

I want to disconnect my data services. Please provide help on how to do that. My data card number is [protected]. I have a bill plan of 599 for which i used to get a bill is rs 650 max every month. This month i have received a bill of 1373 suddenly and getting constant reminders from reliance to pay the same. I do not want to continue with this connection.