Good Sam has always been pretty remote and immune to customer complaints even back 15 years ago when I first got into RV'ing. From their staggering amount of junk mailings once you're on their list to their untrained roadside service call center, they just don't care what you think.
And the CEO of Camping World (who is also the owner) says publicly that he wants nothing to do with fixing any RVs even the ones he sells. And that shows in the huge turn over of RV techs, the lack of training for the ones that remain, and the amazing amount of damage they do to many of the RVs brought in for service.
Stay away. Never use your real address on anything GS or CW related.