Tiffany from here and the Cox Support Forums (»forums.cox.com/forum_home/intern ··· spx#6424
) has told me to wait on word from the maintenance team about the issue. Note that the technician told me they wouldn't be able to solve the problem, but I guess we'll find out for sure. I should be getting word within 10 business days or less.
I was told by support that any billing issues should wait to see how this is resolved and/or wait until the due date so that any potential credits can be done all at once.
Apparently bills are always due at the end of the month (or within a week before fees are applied), so that answered the other question I had.