I have tried to stay out of this discussion because I am admittedly biased. I have known Paul and Shery for quite a few years and consider them my friends. Being in Texas, I have not utilized their shop, but have purchased parts, etc. from them.
From knowing them and knowing their reputation from many other pilots and plane owners, I am highly skeptical of anyone claiming they are dishonest or unfair.
It also worries me when I see this serious attack on any shop, for fear that a person new to the forum might see the post and form an opinion without knowing more.
Naturally, I have no knowledge of the facts of this situation and thus will not say anyone is right or wrong. However, I believe Paul is most likely on top of most things that take place in their shop, and have extreme difficulty believing that the transaction would go down as the OP reported, and would expect that, if given the opportunity, they would make it right.
I would be really interested in hearing how this finally plays out.