I think back when they went with auto renewal you agreed to use their software for life plus maybe a couple of years after death.  However, we were told that a simple phone call could be used to cancel the software if we changed our mind.  Try calling again.  If you get the same run around, ask to talk to a supervisor.  If the supervisor is as dumb as the person answering the phone, come on back and we can come up with a plan B.