Tata Docomo — sim suddenly stopped working and no brand stores available in satara district

Address:

Satara, Maharashtra

My tata docomo mobile number has been suddenly stopped working.
And i want my number back because it's important number for me
Bt there are no stores available in my district and [protected] tata docomo costumer care number is not getting connected from any telecom service.
I have face so much of problems due to this
My contacts are lost my bank account number has been disabled i have faced problems in my job.
Such a big company but not worth it.