Definitely sucks
Booked a 3 segment flight. First and last segment refundable. Middle segment non-refundable. Paid extra.
They told me I couldn't make changes to my tickets because one of the segments was non-refundable and the most restrictive fare rules apply to the entire trip. Wow. So what was the benefit of paying extra for the other two segments? Nothing.
Then. I guess to make up for it. I was told I could cancel the segments I didn't want to use (2, I was going to rebook on Southwest) and keep the fare in an account for reuse - plus a $150 change fee of course. Well it turns out I can only use that money to fly the EXACT SAME ROUTE ... not for a different trip on US Airways. Fail.
They can keep the money. Consider it the cost of the lesson I learned which is that I will save much more time and money than what I had lost by never flying US Airways again.