Tata Docomo — sim not provisioned

Address:

Coimbatore, Tamil Nadu, 641016

My docomo number suddenly stopped working no incomimng and outgoing calls
When dialed it says invalid number, check number and switch. Which is not acceptable!!

Till tower it was working. Not sure why suddenly it has gone as invalid number. I am being using this number for all important contact/transactions.

I need this fix asap.. Please!!

Am not able to contact the docomo service desk at time no near me no service desk
Need this prioritise and help me out in getting my services back.

When am paying for a service which has stopped working for some reason without even notifying me. Completely unacceptable!!