[Resolved]  Reliance Communications — failure of calls

I have reliance gsm connection. I have recharged with STD calling card of 650, the validity of which is 60 days. But i am unable to make std calls since last three days. The call is automatically failed. I made approx. 10 complaints to the company but they didn't pay attention to my problem and always tell me that the problem will be solved within two hours. Now three days have been passed but the problem is the same. They are denying to increase the validity for the problematic period. In my opinion they should increase the validity. The problem occurred due to their fault. So i should not bear the loss, but they should bear it. So please find out any solution. Thanks.