Bank denies EMI offer and the charge slip says EMI and samsung run away with money and no offers thats how they cheat customers

Bought phone on 2nd october for 1lac+ I was given 3 offers on it 1 i was offered 9k cashback on hdfc credit card 2 NO cost emi on hdfc credit card 3 7k coupons on samsung shop I have the charge slip from machine which says about first two ...