Tata Docomo — Tata docomo post paid to prepaid

Address:

Chennai, Tamil Nadu

I WANT TO CHANGE MY POST PAID NUMBER TO PREPAID NUMBER, FOR THAT I HAVE SUBMITTED THE REQUEST ON 21st January, then they told submit the proof to show room, so that i have submitted the proof on 23rd January, the show pupil said, "your complaint number expired, so you can not submit the document right now", the same time i called to customer care again i got the complaint number then i give the new number and submitted the proof,
They simply told your mobile number will be changed to prepaid on 07fEB2014 at 7.28pM. After that i called on Feb 8th morning, they said you are not picking the call on 1st of Feb14, that is why we have not changed, so you receive the call on 8th evening, please attain then your complaint will be solved, i waited up to 5.30Pm then i called you customer care officer and asked about the status, they told you have to visit the show room then only we can change your number Post pay to prepaid, Kindly guide the same.
My complaint number are follow,
[protected],
[protected],
[protected],
[protected],
[protected], my alternate mobile number is +91 [protected]