MTS / Sistema Shyam TeleServices [SSTL] — Alleging of not paying data card bills despite paying

Address:

110036

Hello! Sir and ma'am, my name is narottam and I have used the mts data card before 1 year ago for around 2-3 months whose bill has been paid and and services has been broken down and my data card no is [protected].
Initially I got the somroneelse's data card which have returned whose no is [protected], but for this no I am getting very thereating call from the complany but it's not my data card they have mismanaged the information of 2 accounts and I get the calls of someonelse's dues on this no even I have deactivated my account. This is so bothering, I request u to sought out this issue as soon as possible.
Thanku !