Airtel — My MNP sim is not receiving signal from last 25 days.

Address:

Delhi

I have port my number from vodafone to airtel on 7th June but televerification was not completed. Now the dealers/seller pf sim are saying that you can not retain your old number as televerification was not done.
I am using the number for last 9 years and is spread at all places of necessity.
I request airtel to resolve my query.