Like so many things, giving them your credit card is easy. But getting them to stop charging it, apparently, is not.  Disgruntled customers in New York State discovered to their extreme anger that cancelling the satellite radio service wasn't quite as easy as getting it turned on. 

"The investigation was opened after “hundreds of customers” reported complaints of the company’s difficult cancellation process.

In one example laid out by [New York Attorney General Letitia] James, a SiriusXM agent allegedly kept a customer in an online chat for 40 minutes despite their “clear and repeated” requests to cancel and continued to charge them after, despite the customer cancelling. SiriusXM claimed it “was not able to locate any cancellation request” from the customer."

SiriusXM sued for allegedly trapping customers in unwanted subscriptions

I'm not entirely sure what the laws are in Canada or if they can pull this stunt here, but this sounds suspiciously like Bell and Rogers' "Customer Retention Department," although hopefully even they don't take it to this extreme.