Complaint Rating:

sir, I am an extinhing user of just voip. I have credit
of Euo.3.87. but when i am trying to call to india
one message coming. "sorry you are not allowed to
make this call". almost one month i am calling to
india with out any problem. last friday ie.18 april
i call to india 2 times. but after that i not able to call.yesterday evening also I tried many times but
the same message coming. "sorry, you ar not able
to make this call" I wonder, why this is happening.
please give me any solution for this problem
thanks,