Shortly after I picked up the Model S in February I subscribed to SiriusXM. I figured it might not be as bad as everybody was saying and it may be novel to have. Yeah, I was wrong. The service is really is as awful as everybody makes it out to be. TuneIn and Slacker makes XM obsolete. I tried it out for 1 day and quit. Here comes the fun part... Since March I tried to cancel the service. I phoned them up in March to cancel, which they said they did, but then just ignored. They kept charging me. It was charged on a credit card that coincidentally was expiring in 2 months; I didn't want to go through cancelling again, so I just figured that once the card runs out they'll send me a few warnings, and then cancel the service. Except, their "few warnings" is a phone call every few hours until they get hold of you. On the worse day (at that point) I have had 5 missed calls from them. I finally answered, and they complained about their bill, and I said I wanted to cancel (again). After running through their long script of retention strategies, they agreed fine, they'll cancel. But there was an outstanding balance, which I need to settle first... It was just a once-off thing. Wary of them at this point, I gave them another credit card number that was about to expire. Sure enough, they charged the outstanding amount... and then promptly renewed the service again on my new credit card. I wasn’t going to deal with them again, so I figured this time I'll just ignore their calls until they give up. Yeah, no. Of course the same thing happened, except their calls every few hours turned into hourly, then into every few minutes. Twice I would answer to just yell at them out of frustration. At one point I was in a meeting, they would call, I press "Don't answer", and they would immediately call back. In the scope of 30 minutes they called 8 times. I eventually was forced to leave the meeting to take the call. Went through the same thing again, of course this time with a little bit more colorful language on my part, cancelled, and this time I was clever (or at least I thought so) - I asked them to send me a bill for the outstanding amount and I'll send them a check, so that they CAN'T automatically renew. Except it didn’t work. The calls didn't stop. They would still call me a few times per day because of the outstanding amount. After answering and talking to them 3 times, and stating that THEY promised to send me a final bill, and I send them a check back, I finally had to ask to speak to the call center supervisor and threaten to sue them in order to leave me alone. Finally the calls stopped. Aha! I beat the system. Hooray! Or not... their bill for the check just arrived: "By sending in a check or by filling in the payment information below, you are agreeing to the terms of our automatic renewal".