In (partial) defense of Sirius customer service,
I received a phone call a couple weeks back -- they apparently are surveying their subscribers to find out in detail what they like, don't like, and any new ideas. The survey took probably a good 20 minutes of my time, but I was glad to do it. A company interested in my opinion makes me feel better about giving them my money.
To be honest, though, in the past I have called Sirius for support and it basically lead nowhere. Given, the one time I called, the problem was on my end (bad splice on a power lead), but it was almost more frustrating to talk to them than to try to troubleshoot on my own. First, they assured me that my tuner should be getting the signal, and they even reset my "signal" to make sure, which was good. After that, they were not very helpful. I spent 5 minutes trying to explain to the poor tech support guy that my head unit was not receiving signal from the Sirius tuner, but every time I stopped talking he asked me to "hold down your source button on your head unit and pick sirius"

I might just be picky, but it was a little bit frustrating in a situation where I was already frustrated. Luckily, I thought to check the voltage going to the Sirius tuner in the midst of him telling me for the umpteenth time to pick Sirius as a source, and I was able to tell him that I found the problem.