Hindustan Petroleum Corporation [HPCL] — LPG bottle supplied with 5kg less gas

I have been a regular HP gas customer for LPG cylinder for last 12-13 years. My consumer number is 608480 under distributor C N Upadhyay in the city of Vadodara, Gujarat.
I have received an LPG bottle against cash memo no[protected]/02/22 on 22nd February, 2022. As usual delivery boy did not come with weighing machine. After asking he took out the weighing machine and the bottle weights 25.5 kg instead of 30.6kg (empty bottle weight is 16.4kg as stamped on the bottle).
Delivery boy replied he has supplied the bottle as received from the dealer C N Upadhyay when asked about more than 5 kg less gas is in the bottle.
I am a regular consumer of HP gas for the last 13 years and often found my cylinder did not run for even 25-30 days against usual 40-45 days.
The last cylinder delivered in the month of January was also of less weight by 5 kg when I checked the cylinder at my home before taking in line for use. since then, I decided to weight my upcoming bottle in presence of delivery boy and make a video of the same.
If a LPG bottle is delivered in which more than 5 kg material out of 14.2 of gas is less (more than 30%) then as a consumer it is of deep pain and calls for proper justification and action against whoever is behind theft racket.
So I am here by lodging a complaint and seek proper action to be taken to stop harassing common consumer like me.
The cash memo and screenshot of videography of the weighing of supplied bottle in presence of the delivery boy are attached as a proof of my demand. Anyhow the I am unable to add video here, I can show the whole weighing video when asked to.