I asked for my flight to be changed and after an hour of chatting with them they did. I later found out that they used 58,100 miles to change my flight even though my original flight was only 16,100. Before starting the chat, I asked what the stipulations were and if they were going to charge for it and they guy never responded to my question nor did he let me know he was charging that many miles to change my flight. This is unacceptable and very upsetting. Their customer service is terrible!