Paid for extra legroom seats. Ryanair sent a different plane and so we had standard seats due to the layout of the plan. Asked flight crew if we could move as hubby has knee problems and I hate flying. He was incredibly rude, would not let us move despite it being a simple swap, only 1 row back. Turns out people with our seats were kids, but flight attendant still wouldn't allow us to swap and gave our seats to someone else who hadn't paid for upgraded seats. Continued to be awful througout the journey. In addition it was like they were trying to cook us all, plane was unbearably hot despite pretty much everyone complaining. We absolutely will not fly with them again. Have contacted for a refund for upgraded seats and keep getting passed about with them claiming that there is no record of a plane change.