I did finally get my book back. It took a few more calls, e-mails, and unresponsive times but the book arrived safely packaged. The slab says the book was signed back in April, no telling why it took 6 months to be graded and returned at that service level. I never got an explanation other than they were busy.
On the plus side the comic was originally a PGX 1.0 and it came back a 1.8 with the signature on it.
Overall not a great experience for me, but it looks like sloppy handling and customer service rather than any criminal intent. I'd recommend anyone else dealing with them to go into it with a lot of patience. I did ask for price breakdowns before i sent in my book, but they changed it on me after I paid for expensive shipping. So buyer beware.
Thanks to all who offered advice.