I phoned it in, what a joke that was. Referred to the web support dept - a call center in the Phillipines? - had to repeat my issue about 5 times before she got it straight. She tells me there's no record of the $125 charge on UA's side and that's it's probably "just a pending charge that will drop off". (yeah, right) She tells me there's nothing she can do so I should just go ahead and dispute it with my credit card company. Wow.

Kudos to Chase PPMC customer service who quickly and efficiently filed my dispute.