Indian Oil Corporation [IOC] — subsidy not received from gas agency at

Address:

Tarn Taran, Punjab, 143401

I am registered user of Indane gas Bal gas agency at tarn Taran. We have provided all the required documents including aadhar card but we didn't receive any subsidy from 2017. We talk to the gas agency and they ask us to submit a aadhar linking form at our bank branch for subsidy. Bank refuse to accept the form and they said that your aadhar card is already registered with your bank account number.
Kindly look into the matter and please provide us a solution.