[Resolved]  Tata Docomo — bad language calls from a man saying himself a police officer.

I was using a tata docomo number and having a plan of 1299/- per month which gives the facility of free roaming n free calling unlimited. But as i came in roaming in rajasthan i found that my friends who were using tata docomo in rajasthan were getting the services from docomo but i was given the services from idea, as the roaming was free only in tata docomo home network. I was shocked that how can it be possible that my friend's mobile who is sitting with me is able to access tata docomo network and i was given the services from idea. I complained to the concerning support department but there was no satisfactory answer. Later, my relatives was called from a man who was using bad language and saying that i am a policeman and i have a case filed against this person (my name). He said all of my relatives that your relative is 420 and i will have to arrest him as a person filed a case.
Everyone called me and i was much scared and then i called that policeman asking what the matter was he gave me a number of a lawyer and said me to call him.
I called that person who was saying himself the legal advisor of tata docomo and he said me to pay the due amount. I said him that it is a wrong bill, why i pay roaming bill when roaming is free? He said in tough words 'ok no problem i see you in the court n then u will be charged rupees 78000/- as a claim from tata docomo'
I was scared and as i reached the tata docomo office, i found the office was closed as it is sunday.

It is very embrassing thing, please suggest something.