Bhadra Gas Agency — Delay in delivery of cylinder

I got a new gas connection in Basaveshwara Bharat gas agency where the staff there were very rude and irresponsible and told the cylinder ll be delivered next day but nothing happened. again when i went to ask that was really disgusting and telling me to follow up which is there work. and it took 4 days to delivery the gas cylinder where i was behind them to get my cylinder.
they dont know how to talk to customers.