Has anyone else had this happen? When I logged into the iTunes store last night, I had 4.95 USD store credit. I bought one single, solitary song for 99 cents. My store credit immediately dropped from 4.95 to 0.09 USD. Say what?! 
Yes, I've contacted iTunes support. So far, their response has been next to useless -- but wordy and flowery enough to be worthy of a Bollywood movie.
(To give credit where credit is due, they did solve a related problem.)

Yes, I've contacted iTunes support. So far, their response has been next to useless -- but wordy and flowery enough to be worthy of a Bollywood movie.
