As I'm fond of repeating ... Run, do not walk, to your typewriter and send a letter to your state attorney general and cc the public service commission. And for good measure add in the FCC and FTC. The people sending you the bills are treading across (and in my opinion are way past) the fraud line.
There are broadly speaking three possibilities once your letters get there. Choice "b" seems to be the most common:
a) you'll get completely ignored; b) they'll take your note and forward it over with a cover letter to the various people. That will usually get the attention of someone or another who can fix things for you.
and
c) just maybe, after they get umptity identical complaints, they'll start actually hitting these businesses and the people running them with civil and even criminal actions.
_____________________________________________________ Knowledge may be power, but communications is the key snipped-for-privacy@panix.com [to foil spammers, my address has been double rot-13 encoded]