Tata Docomo — to activate my number which is deactivated

Hello
My contact number +91 (*) has been deactivated since i was not using long time around 4-5 months, i want this number activation so please take necessary action because in many contacts i have given my number so please activate it as early as possible as it urgent for me so do as early as possible
I hope this proble will resolve shortly and looking forward for that.
Thank you
Amit agre