Airtel — mnp failure please help

I had submitted an mnp request from bsnl to airtel and the required kyc documents on 18/09/20. I have received the following message
"dear adithya null, validations of your documents for porting your mobile no. 82xxxxxx86 could not be completed successfully. For more details, contact your point of sale from where the connection was taken or the nearest airtel store."please help me through the process as i have paid money at my local store for this. Four days have passed and no response from airtel. Please help asap.