I have a prepaid connection when i called them to ask why they disconnected without any information only one messgage telling that it has been disconnected, they tell me that i am lying and that they have sent lot of messages and if I want i can be in airtel or look for some other provider.

You mean your number has been disconnected ?

Were you not using using it from long ie. 2 months , you know if your connection is not used for 2 months, it automatically gets deactivated.

Is it the case with you ?