Pattammal Gas agency — demanding for 50 rs extra by delivery person

Each and every time i complained about demanding extra cost of rs 50 by delivery person in pattamal gas agency to the agency itself, so far they have not taken any serious steps to stop this crime. Kindly the concern head members should take immediate and necessary action to avoid this. This is looking like a decent robbery. Demanding is highly punishable. Please take proper action to stop demanding extra amount for each delivery of the gas cylinder.