Just curious, how long does it usually take billing (billing@lunarpages.com) to respond to a time-critical ticket?  It's been 25+ hours now and I haven't heard anything aside from the ticket being received.  They charged my account $16 for a domain that hasn't been registered through them for months, and I want to ensure that all of my accounts are canceled well before they try to charge me for hosting again on top of it.

I have read many horror stories online about customers trying to cancel their accounts or being charged unfounded amounts by Lunar Pages without ever receiving proper support, and I want to ensure this doesn't happen to me more than it already has.

Right, as MrPhil pointed out - the billing team usually only works regular business hours, which can be found here:

http://www.lunarpages.com/contact/

If you have a ticket in, it will be answered as quickly as possible.  You might also call at the same number listed on the site above to talk directly with the billing team.  Hope that helps!