From my understanding, QOV groups have (or should have) quality control and quality requirements - so they should at least know (and see photo's) of the quilt. If you are not willing to contact the LA, contact the group leader - or another member. They may even offer to remove the quilting and re-do it.
The good news is that if the bottom tension is that loose ... it's very easy to remove the quilting. Some of the area's where it was over-quilted will be harder, but it can ... and should ... be done.
There are so many QOV groups, I'm sure if you contacted another they would be happy to get it quilted for you. You might have to ship it though.