Idea Cellular — didn't transfer my number

Address:

South Delhi, Delhi

respect sir,
its been more than two months i'm trying to get my mobile number which is currently postpaid with ideacellular to perpaid ideacellular, i have submitted my documents 3 time, paid my bill 3 time each time Rs500 which they say is my new bill which they keep generating every month, when i go to customer care office they say from their end they can't do anything ask they have sent the request but its been 2 months now and i don't have any number as my postpaid sim is with them and perpaid sim is not working....
my number is :- [protected]