More facts are needed to answer your question. There may or may not be a crime. Speak directly to a local defense attorney.
No. Not unless you borrowed someone's account to sign up for a service fraudulently. If anything, it seems like someone pulled a fast one on you and you should get your money back or look into litigation.
Unless the bill came from a court order, your concern at this time is whether or not there is a case against you. Probably a good idea to call the phone/tv company and work out some amicable resolution before worrying about going to jail. It is also possible that you had some kind of trial period that required you to cancel but you did not. Then the issue would be whether that you knew about it, whether it was fair to you as a consumer. But, if you have reason to believe there is criminal prosecution pending, then do not talk to anyone without an attorney.
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