Sir, you can still travel to Aruba with that 6000pts, one you are able to use a studio in January which is peak season on the Island. For doing that you don't call RCI you call the club directly.
Second keep in mind that if you don't have enough points all you need to do is pre pay your maintance fee to have enough points for that particular reservation.
Yes it could be that the staff wasn't helpful, but learn more before letting go of the product. Send a letter of complaint to the CEO on the staff, for costumer satisfaction is important for the company.