Tata Docomo — not able to send sms

Address:

Patlipada, D-10/404 RUTU ESTATE, Thane, Maharashtra, 400607

I have been tata docomo customer from 2013. From few days even after having balance in my account i am not able to send sms. Have subscribed for two special recharge packs. Even then i am not able to send sms from my number.
Tried calling the toll free number but that was of no use. No other customer service is answering the phone. This is such a nuisance. I had an emergency and was stuck just because i was not able to send sms.