Reliance Communications — sim replacement or mnp

Address:

Purulia, West Bengal, 723103

My reliance sim card was registration failed thats why i replaced it with another one from malda customere service center (Wb). Bt within 2 mnth my sim was registration failed again.
I went to the service center bt it was closed 4 a week. On that time i lost my failed sim card.
After a week i went 2 the center to regenerate my number and they asked me for the old sim card or gd copy as lost proof. I managed gd copy within 2 days and while i reached the customer care cente i got it closed. Now its 5 to 7 mnths gone bt it didnt open till today.
I used that number for 8 years. I need the same number. From where and how i can get my number back. I am ready 4 mnp bt without the sim card it is not possible...
If there is any way to get my number back please help me..
Please give me atleast contact number of the responsible authirity.