Airtel — all calls are barred ( incoming & outgoing)

Address:

Gorakhpur, Uttar Pradesh, 273003

My outgoing & incoming are barred since i have bought my number (aug 2017 - till now), i recharged my number with 399 70days ago, i didnt got my benifits only net was working. Today i recharged my number with 448, the problem is same. Several times i complaint to customer care but my problem not solved. Should i throw my sim ? Or is there anybody who help me to get rid of my problem. I m just fedup of Airtel's attitude.