Sunoco in Belleview, Florida Scammed out of 25 cent a gallon fuel rewards and 50 cents gas on Credit Card Belleview Florida

I had 25 cents gas rewards (on Winn-Dixie Reward Card), 10 cents expiring today. I made the mistake of going to the Sunoco station at the corner of SE 102nd Pl and Hwy 441 (right near the Winn-Dixie store). I entered my card, entered my credit card and it took four minutes to get 40 cents worth of gas. Went into store and he said he was out of regular (no sign on pump) and he would (fix it?) and give me the 25 cents off on premium. Regular gas was $1.79. Premium is $2.39. Scammed me once, wants to scam me more. Wrote to Winn-Dixie, Sunoco, doing reviews, filing Ripoff report on this station. Sorry, but almost everytime I go to places run by these people (gas stations, hotels, etc.), I get ripped off. This time $5.50 cents worth because I don't even think I got the 50 cents of gas and of course no receipt came out. Now I have to worry about my identify being stolen with my credit card.