Aircel — can't get my upc number

Address:	North 24 Parganas, West Bengal, 743165
Website:	www.aircel.com/AircelWar/appmanager/aircel/wb

I am trying to port my aircel no [protected]. As there is no network in that sim i can't send sms to 1900. I was trying to generate upc no from iccid no. But the retailer is saying that it is an incorrect number. I am just guessing an incident which may be the cause. My phone was stolen 3 -4 years ago so i made an fir and submitted the gd to aircel retailer and they provide me a new sim with the same number. Please guide me what to do and how can i keep this number. My this number is user adhar card, bank, gas everywhere. I have completed the kyc for this number a few months ago.
Please help me to keep this no and port to another provider.