Airtel — mobile no.[protected] disconnection

Address:

500013

The above mentioned mobile was transported to bsnl 4/5 months back. After clearing the dues then. After lapse so much time airtel got my mobile deactivated claiming some more dues and helped bsnl
I paid airtel dues on 14/09/2017 in their call center, chikkadpalli main road around noon time. They have not given any receipt.
A scan of slip issued is available. Airtel has not conveyed this info. To bsnl and hence bsnl not activated the mobile
Can't they call bsnl and confirm receipt of their dues.? I suffered lot of losses due to this in action..

Ramesh prasad