I had  a miserable time getting paid by them.  What I ended up doing was posting my complaints about them on this site.  The president of the company read my notice and I had a check in a couple of days.  Of course it was not for the full amount.  I had to call them repeatedly to get them to cough up the balance.  I don't remember the president's name, but I'm sure you could get it from them and then complain to him directly.  I've cut them off my client list.