I was a Premier Executive w/UA for a number of years and after moving out of Chicago and not taking them as often they seemed to drop me like a hot potato.

They never got my change of address in their system properly and sucked the last 40k miles out of my account after 3 years of flight inactivity -- despite mileage being credited from partners. Of course, I never realized that while I still was receiving their Mileage Plus Dining (or whatever it was called) information I wasn't recieving activity statements.

You'd think they would have wanted to keep a fairly loyal customer.