FALSE ADVERTI*****T

Bought a new Mahindra Xuv300 last week Thursday and I feel we are being over charged. The adverti*****t said that the W6 petrol without deposit will be R3199 per month, we gave a deposit of R28 000 and our payment is R4320 per month. Love the car but I will never ever by a Mahindra again, false adverti*****t and when I send the adverti*****t to the dealer he told me it was only group 1 that this adverti*****t applies toe. But strange after we signed and we went to tool pictures with the car it stated on the bow on the car it was group 1 mahindra