Tata Docomo — I am not getting incoming calls

Address:

560037

Hi,

Since today morning I am not receiving any call in my docomo number.
I am not understanding without informing me how Tata docomo blocked my incoming calls.

Even I tried to reach customer care but I did not get any proper response from them.
Please resolve this issue as soon as possible, otherwise I will change tata docomo network to other network.