It sounds like they have a very high tech office with one phone line coming in. I didn't know it was even possible to get a busy signal anymore unless your calling your grandma that doesn't have call waiting. I just called them this morning and had to hit redial about 20 times to get through.
I've been using the local number...not the 800 number...it seems to connect w/o problems...you may have to wait and listen to a recording a few times, but no busy signals