Indian Oil Corporation [IOC] — Cyclinder weight loose

Address:

Pallavpuram phase-1 meerut

Today I have visited to Gas godown of Shree Darshan Gas agency to collect my gas cylinder personally & ask them to less delivery charge but refused to do so.
I have talked to customer support personnel Mr. Gaurav Garg for help. He said first you have to give an application to them that you will collect your gas cylinder your self only then they will waive delivery charges.
Sir from last six when I checked I found that we are receiving short approx 2kg to 4 kg LPG gas from Shri Darshan Gas agency (Pallavpuram- Meerut), Anil Kumar delivery man.
I have also talked to Mr. Gaurav Garg ( customer service personnel - Meerut) regarding this matter but didn't get support from him. He said we can't do anything in this matter. We can only change your cylinder.
Please help & support you customers to stop this malpractice.