MTS / Sistema Shyam TeleServices [SSTL] — postpaid data card disconnection

Address:

743144

I emailed multiple customer care IDs and also called the customer care number
All Emails are bouncing and customer no one is picking the call..near to my house at Barrackpore and shyamnagar both mts stores are closed.
I need to close this asap.
Mts data card Number : [protected]

Please call me at [protected] for help.

If I am not getting any help how can I close the connection . Customer care email unresponsive, customer care call centre unresponsive and near by also stores are closed . What is this??