Airtel — cannot do recharge after i port my airtel number from ap to delhi

Address:

New Delhi, Delhi

I port my airtel prepaid number from andhra pradesh circle to delhi circle. The porting is done on 14 november 2017 but i cannot recharge my number. I visited one airtel store here in delhi and still they are not resolving. They are telling there is some system errror and they have put up a complaint.
Now i can only receive phone call, cannot make outgoing calls due to low balance.
Kindly look into the matter asap