Makro - False selling and advertising

So I purchased a dishwasher from Makro in August. Sales person sold it with the promise of 10% mrewards back. The sticker advertising this was also on the machine. Nowhere did it specify you had to buy it on credit or with a makro credit card. They even helped me to download the mrewards app when I was there. When I enquired about my rewards after a few days. The first response was that the dishwasher I purchased did not qualify for the 10% back. I pushed back. Then the response was. Oh you had to use your makro credit card. I am not happy. I want my 10% that I was advised I will get.