United shopping portal. Horrible. Their significantly delayed and messed up postings have cost me the ability to properly plan travel when depending on those miles to book way in advance, even after giving THEM 3x the amount of time suggested to get the postings.
I have had to chase miles at least 15 times in the past year alone. Granted, I do manage some of the accounts from family members, but you can also note that partner mileage from say, US air to post into UA has also often involved letter writing and photocopying tickets, etc. It's actually something I EXEPCT to happen now, so I keep detailed files of every transaction I do until I see every mile come through on any given anything!
I would have to say for me, it's got to be 7/10 or 70-75% rate of having to fight for my right to party.
oh well, it must be why I am a good 'whatever I am at work that these skills obviously helped me get the job I'm in now.'

MM