Airtel — network issue while calling

Address: 577004

Since morning i'm unable make calls from airtel prepaid sim which i recently converted from airtel postpaid but i'm able to receive calls.. I tried switching off and on method and even i reinstalled sim in slot.. Even then it's not working... Even i shifted my sim to another mobile but still the problem persists..

I tried contacting call center but unsure to talk to thier executives..

Very poor customer service from airtel... If the problem doesn't get resolved within tonight.. Airtel will have to bear loss occurred to me

Yours faithfully