I purchased two RT business class PHL-PRG through expedia on 2/11/2018. It was booked on Iberia, but AA was the actual plane. The flight was on Sept 1, 2018, so business seats were available when I booked. When our boarding passes were issued at the airport counter, we were seated in Main cabin and told there was no room for us in Business. Same thing on the return. I called all three parties customer service to no avail. Each blamed the other. I am new to this site and would appreciate some coaching on the steps I should follow. I tried disputing with Capital One Visa where I charged the tickets--they refunded the $15 expedia fee and closed my case due to my not submitting a "second option" and a "refund voucher" .