Airtel — trouble in calling

Address:

Varanasi, Uttar Pradesh

I have been facing trouble in calling someone since last three days. I am really very much pissed off with airtel services. I have been facing network issues from a long time but this time this is too much even i am unable to call someone in urgent. Whatever number i had tried calling the call automatically get ended within 2-3 seconds before connecting. Kindly provide better services otherwise i am going to port my sim in another network!