Once I was credited with too many miles,called UA and they took them back.But I felt better. If it was the reverse(not being properly credited)I would be on the phone in a flash.

But now I am in a dispute with UA about an upgrade I bought my Dad. The flight was cancelled and rebooked at AA. He was put in coach,(which I didn't catch because of all the rushing around).MP visa says too bad, once you get on the plane you essentialy agree to all conditions. UA says go to AA, AA says go to UA...it is a mess.Should have kept those miles.