Location/place: raipur

Name of company/service: lg

i bought a fridge of Lg 160 ltr frm Amit Sales Raipur the price written on fridge was Rs. 24900 at the time of purchase and after exchange with my old fridge final bill was made of Rs. 19500 at the time of delivery on the cover original price is Rs. 18000.00 and the owner is not responding to the matter