Broke my ankle on vacation called the airlines the morning of departure...was given wheelchair assistance which really does not mean anything because I got my own wheelchair. Called to see if I could get my seat upgraded because I had a cast on my right leg. I was told by a very nice person on the phone that they would gladly upgrade my husband and I for free and that I would be sent an email w the new seat assignments. An hour later no email... so I called back I spoke to a cust serv agent and he told me that the seats were not upgraded but that he would go ahead and do that and he would send me my email that the email usually takes 24 hours???? Get to the airport an hour before my flight is to leave no one was at the check-in gate and still no email... so I call the airline again was told over and over by a woman who did not speak good English that my seats were regular economy seats.I explain my story ...she got mad at me and she hung up. I called back talk to the supervisor and he was just as rude he told me that my seats could not be changed after I had checked in for my flight I checked in my flight the day before like I usually do... however, I broke my ankle that night. I asked him if his first customer service agent lied to me...??? he told me that all calls are recorded that his agents do not lie and I told him that she must have, because I do not have an upgraded seat. This sort of thing would never happen on Alaskan Airlines... The only reason I flew United was because I got a great deal. Well, a great deal does not mean great service. I will never fly this Airline again...ever! They could have cared less that I was in a wheelchair and had crutches.