Hotel Delhi Darbar — hotel charging more amount on food with out any proper bills

I have seen many time hotel on the highway from pune to hyderabad are charging more money, even double on food products in night.
So please help file compliant againast on them for charging extra money without any bill.
Hotel name :- New Delhi darbor
They are charging double on food items even MRP prices they are selling for more money
Quality of food is not good as expected