Indian Oil Corporation [IOC] — Harsh attitude of Delivery man

Address:

Kolkata, West Bengal, 700096

I am Soumitra Chatterjee at PURBASHA HOUSING COMPLEX, BRAHMAPUR, BADAMTALA, KOLKATA-96 and my Indane gas dealer is 'PL Gas Agency at Boral.
My complaint is that the delivery person behaves badly & asked for tips Rs.20-30 rupees extra every time for keeping the cylinder in the verandah.He was forceful for extra ceremonial 'Baaksish' as well.And on paying Rs.10 as tips he threatened of not deliverying.My father died just 2 months back & my mother a recently turned widow panics on such an attitude of your delivery man.
The aforesaid matter need to be taken care so that any consumer of my area be harassed by such a delivery person.