For those having trouble cancelling the auto pay, why not just call your credit card company and instruct them to deny any new charges from EH?
Wouldn't you then get dinged by EHarm for "non-payment!"? Then it gets on your credit rating etc etc. I think they know people are afraid of this exact thing happening ergo people pay 2 or 3 months of extortion money until things "get sorted out". AOL used to do the same thing