These things aren't toasters packed in Styrofoam. They are heavy and subject to shipping that most appliances aren't exposed to. What worked at the factory may get a connector jostled loose during shipping. And it is unreasonable to expect any reseller (which is all Griz is) of their size to 'function test' every machine that moves through their warehouses. Smaller guys like Matt can do it, but I would be pleasantly surprised if he uncrates every machine and tests every function. If I'm wrong Matt, I extend my sincerest apologies.
And no, I seriously doubt that they (or even PM) has a Quality Control Department. That is for manufacturers, not resellers. If a machine show up in my garage that doesn't work, I will make every effort to troubleshoot the problem to root cause. If I can (I don't have schematics for the controller board for example). I'm not saying you did this, but if they open it up and discover a loose connection that when fixed makes the machine operable, I can see the restocking fee from their perspective. Not saying I would do this, but I'm not part of this scenario.
You should have a better experience with PM and your new PM25.