I would wager that it took longer to post the message than it would to call D* and get it cancelled.
As others said, it was probably part of your package when you signed up. I know it's hard for a lot of people that read forums like these, but D* really does not gain anything by pissing off their customer base (and they know that). Mistakes happen and when they do, D* is pretty good about straightening them out. It costs D* more to straighten them out than they would gain by customers not catching it. I can virtually ensure you that it is not a D* policy to try to 'slip on by'.
There are other, more valid things to gripe about with D*. But to compare them to "Honest Eddie's Used Car Emporium" is a bit of a stretch. (Not saying the OP did this, but many others in this forum have.)