Reliance Communications — doesn't receiving upc code message

Address:

Thane, Maharashtra, 421302

Sir,
I am trying to make a mobile number portability request from my reliance number to get my unique porting code; but every time i got "this service is temporarily unavailable” message as a reply from 1901. I had never received the code. I made a complaint many time for this problem in customer care as well as the local reliance office, every time they told the new problem and it will be resolved in next 24 or 48 hours. But they didn't solve my problem. When ever i had call to reliance customer care they just pickup the call and place call on hold they doesn't give any response and disconnect the call. I literally frustrated with these. So please solve my problem and give me my upc code message.