This is a good way to make a retailer lose their GoPro reseller authorization. GoPro is most likely already on their case. Can only speculate considering there are no actual GoPro cameras on their site anymore, only accessories.
For future reference, please keep GoPro deals on the down-low. GoPro keeps a tight leash on their pricing and if you want these deals to pop up again, it needs to be under the GoPro radar. Don't let retailers like this one be made into an example, which scares other retailers into being much more careful with their promotions.
Agreed. Stick to REI, your local shop, etc. I've gotten 20% off from them and they'll likely remain a GoPro dealer. I've had issues before and was able to deal with local shop vs GoPro. I can't comment on GoPro customer service, but it's nice being able to take your stuff to a local dealer who will do the legwork for you.