Trai — server not reachable

Address:

Hyderabad, Andhra Pradesh

When ever i try to make a call from my mobile, i am facing issue as server unreachable.
Network provider is bharati airtel.
Each time i should try for a minimum of 50 to 60 times to make a call.
Else need to remove the sim and try to make a call which is a not worthy everytime
I am losing lot of time daily because of this. Making a call is a small task for every one. But for me it's a very big task.. To connect to a call, i should keep on trying until it's get connected.in the busy schedules that we have everyday, one will not want to spend more time just to make a call. Think of a situation where a person needs an help, or a person somehow trapped by someone in an interior place, the only option that person will have is to inform someone by calling from mobile, if this is the case where server is not reachable all the time, how a person can atleast try to escape from that situation being harassed by other.