Fifth Third Bank Credit Card Complaint

Fifth Third Bank Credit card department,

APR or interest rate Ohio

On - -, 2015 I contacted - - - - to pay off my vehicle. I paid using a Fifth Third Bank credit card. The total due to pay off my car loan was $7400.00. I went ahead with the transaction. This was considered a point of sale purchase. On -/-/2015 when the transaction posted for $7400.00 to my Fifth Third Bank credit card, i noticed there was a cash advance fee for $290.00, I immediately called the bank and of course immediately i get a bunch of runaround. However this was not a cash advance and I will not pay 24.99 % when i already was paying that to - - - prior to paying of the loan. So what did i gain by paying off the loan to get the same interest rate as - -. I contacted - - on -/-/2015 and they advised me that they did not process this card as cash or a cash advance, and that Fifth Third Bank back end processing converted it to a cash advance. I disagree with what has happened and i expect a serious resolution or my next step is to see an attorney.