Normal Channels Haven't Worked

E-mail sent to my oh-so-lovely Cable/Internet Service Provider:

I would like to please speak to a customer service representative, any customer service representative who is capable of providing just the tiniest margin of customer service. My bill is a screwed up mess, and I am begging, please, please, please, let me speak to someone who is even remotely capable of managing a billing customer service issue. Surely there is someone left.

Account: XXXXXXXXXX
Issue: $60.64 in excess charges plus a $5 late fee and threatening disconnect letter
Documentation: Transcript promising free installation; receipt dated 9/24/08 showing $0 balance and printout showing that we were charged for 2 installations. This was after speaking to an exceptionally disinterested customer service rep in person in Waco.
One unreturned voice mail from Sunday evening (I left this after being transferred three times and spending 30 minutes on the phone).

I am seriously doubting that customer service is anywhere on This Company's list of priorities.
I wonder if this will get anyone's attention. It feels like I've been yelling down an empty corridor just listening to my own echo for a month now...