MTS / Sistema Shyam TeleServices [SSTL] — not able to contact mts in anyway possible. need to de activate

Address:

122001

There’s no internet in my mts mblaze data card since many days. I’ve been paying all the bills on time and have no unsettled bills. Mts has de activated all its contact numbers and email id. I went to the store from where i purchased the connection but that store is permanently closed there. I have been trying to contact mts since 15 days but i’m unsuccessful. I want to deactivate this connection ([protected]). How will it get deactivated if i am not able to contact them. They will charge me for every month without giving their service. This is pure loot.