Samsung Electronics — payment done but product not delivered

Address:

Bhopal, Madhya Pradesh

I have paid 15000 for microwave owen on 15000 and samsung executive promised me to deliver product in a few hour to my door. After 2 hour executive call me and said that desired product was not in their queue, so I have cancelled my purchase. The payment was done by credit card and they promised me that they will claim for transaction. But after one week the amount is reflected on my account and also cnfrm with bank. Bank informed me that the amount has been claimed and deposited to merchant account. Now on confirming that with merchant he told me that the amount was never claimed. And even merchant is saying that even if they recieve the amount they will deduct 2.5 percent as transaction amount. Now the product which was never been delievered to me, so why to bear 2.5 extra charge. Please resolve my matter asap.