I have the service manual. I just looked it up, and there's a rear hatch adjustment procedure in there. Anyone can send me a PM with your email address and I'll send it to you. This will allow you to wave it in the service writer's face and tell them to perform this procedure, or if you're feeling bold, you can try the procedure yourself.
If nothing else, it shows the specs for a properly adjusted rear hatch, so you can take measurements to determine if your hatch is out of alignment.