Classic Holidays / Classic Leisure review: unethical behavior and not providing service stated

My wife and I joined classic holidays after been given a scratchy at movie world on the gold coast. We were told if scratched it we might win a free weekend holiday at a 4 star resort, amazingly we did win a holiday but only claim it if we attended a sales information seminar on joining classic holidays. During this sales pitch we were given examples on how a membership in classic holidays is a great way to have a cheaper holiday at a 4 or 5 star resort with a family when ever we wanted, even on school holidays, being teachers this was an attractive offer as it is difficult to find cost effective rooms at resorts during school holidays. We were also told we could easily book overseas holidays and cruises through classic holidays as well. As this seemed like a good opportunity for cost effective holidays we signed up.
However, it did not turn out as we were lead to believe, when trying to book our first holiday during a school break we discovered we had to book in advance about two years. We tried to book flights and accommodation for an overseas holiday, but were told that there were no resorts or hotels in the country we wanted to visit, and it would cost us extra to book at other hotels, this was not told to us when we were sold the membership. We have had to repeatedly chase up information and requests for bookings and emails have gone unanswered.
The service we have received is not worth the $12000 we paid for the membership, and the annual maintenance fee is worthless to us. We want to end our membership, however have been told that we signed a contract which doesn't allow us to exit. Again this was not disclosed to use in the first instance, when signing up.