Idea Cellular — Sim deactivated and allocated to other person

Address:

533103

I have an idea [protected] number Chennai..5 months back I shifted to AP.I use idea sim for internet sometimes..all my bank accs, paytm and other apps &work related whatever I do they links to my idea number..recently they blocked my number and so iam not able to receive OTP for bank transactions. called to customer care and they said allotted to other person and simple sorry..
I want my idea number back ..I don't want to change my number to other services I avail in this world using this sim..vexed up, not even simple rupee iam able to spend online because of your ### rules

MY alternate number is [protected] ...please help me fast
NOTE: I did not receive prior intimation of deactivation of my sim..This shows how stupid idea service is