GlobeQuest Travel Casa Dorado - travel club rip off Miami Florida

I stayed at MeCabo in Cabo San Lucas and was approached to attend a timeshare presentation at Casa Dorado, their sister resort.  We traded in our current 2 week time share (2 bedroom suite / ocean view room) with a different property and bought a GlobequestTravel membership at Casa Dorado for the same room type.  We have just been advised by GlobequestTravel Club that we no longer have access to the Casa Dorado resort as it has been overbooked by their members and unless this was your "Home" resort they can not longer offer this property to their members.  This is UNLESS you want to pay an upgrade fee, over 8K in my case!!  

So if I give them more money I can gain access to the resort that I've already paid for!!  Casa Dorado is the only property on Medano Beach that GlobequestTravel has where I could even book a 2 bedroom suite, so basically I can no longer stay on Medano Beach, where I purchase my timeshare, because they have removed the resort I purchased at from my list of accessible resorts. Anyone else have this problem??  I think we have the basis for a class action lawsuit since they will make the inventory / resort available if you are willing to pay more money!  Please comment and let me know if you've have a similar response.