Indian Oil Corporation [IOC] — Indane gas agency - customer harassment

Address:	560076
Website:	Indane Gas Agency

I have booked indane lpg cylinder online. Cust no: cx19091506.
Its been delivered through agency j n enterprises btm 1st stage. We dont take subsidy. The delivery boy keeps the cylinder inside kitchen in 1st floor. So i give away 10 or 20rs to them as tip. For the past few months, the delivery boy demands 30rs and i do tell him to take back the cylinder if hes demanding money. I complained about this to the agency as well but no use. This time i gave him 20rs and again he demanded for 30rs. When i said no, he took the cylinder back. He talks very rudely and doesnt have manners at all. What i can do to escalate this matter. I dont want get into a verbal abuse next time. Please help.