I just encountered the same issue. Sirius had no idea what I was talking about. I read them the excerpt from the post above and they miraculously figured out a way to make it happen. Only took three calls, the last of which lasted 35 minutes.
I have been a Sirius user for 20 years (Since Howard Stern moved to it) . There are a few intricacies. Firstly, no knock against outsourcing, but that is all you get when you call, English is not their first language and a lot is lost in translation. Call again and you may get someone who is better at understanding. Secondly, don't EVER pay for the subscription when your ends, let it run out for a week or two. I am now listening to the premium package in my GMC for $125 for the year, they originally offered $99 a month. The satellite is circling the earth either way, they would rather get something from you to pay for the rotation around the earth!!!! Good luck, as all have stated already, you should/will get it. Side note: the sound it soooo much better that listening to an IPOD, louder, clearer, way less distortion.