Yes, they publish their phone numbers.  Address, too.

http://www.coastaletech.com/04prius.htm

Scroll to the bottom.

If anything, this points out how sloppy they are about their web site.

But this sloppiness is not unexpected, given how sloppy they are about
their business overall.  Had you asked beforehand, I could have told you
all of what you said and you would have been prepared.

They have great products, but absolutely lousy service--to the point
where it's almost not worth putting up with just for the products.

There's no "overnight" shipping; oh, sure, they'll put it in for
overnight, but only when they get around to it--maybe two, three, four
weeks after your order.

I had to call and push the issue for my order.  They made some excuse,
and shipped it out that day.

But everyone who has ever done business with them knows all of this.  
It's not that you won't get your order.  But you have to call, push, and
follow the whole thing through yourself.

Yep.  They suck in how they deal with the public.  No question.