ALL INCOMNMG CALLS BANNED

Location/place: SHILLONG

Name of company/service: AIRTEL PREPAID MOBILE

I have a Airtel prepaid mobile connection from last three years. Now all incoming calls banned by the Airtel services without any reason. I approached customer care many times and there is no action.Now out goping to customer care is also banned to my No. My Mob No is 98628928072.