RELIANCE DIGITAL - Order Cancelled without consent and price changed

I have placed an order on Reliance Digital on **st May’** for a Television in a sale price with credit card discount. They have cancelled the order without my consent and change the amount to a higher amount price. They are openly running this Scam and cheating their customers. I have all the necessary evidence to establish the complaint. Need help in getting the order delivered at the same price at which they have accepted the order but later denied and cancelled it without my consent.