Just keep trying. If you are having problems just say cancel to the voice prompts. This is all I did. Once I got to a rep, I just stated that I was looking at specials with ST and then mentioned the new customer deal. I never once told the rep that I wanted to cancel after getting through the voice prompts.
I pretty much got that same deal you did. One phone call and took their third offer. The first two offers weren't up to much so I told them to forget it and get back to me if they had something better. He placed me on hold and a few minutes later came back with the new customer offer of 5 payments of $59.99 with free premier.
:up