Does anyone have the Mileage Plus phone number? UA's website is not very helpful. I am missing bonus miles (for online purchases) for several itineraries and would like to get them properly credited.

Also, when do 500 mile upgrade coupons post? I crossed the 10,000 mile threshold on January 17 and would like to make sure I have enough upgrade coupons for my next transcon trip over President's Day weekend.