Don’t call them they will do everything they can to prevent you from rescinding. The rescission instructions are in the contract you received. You need to send a letter, certified mail return receipt requested, signed by everyone who signed the contract, stating that you are cancelling and rescinding the contract. Do it today. If you can’t find the instructions to rescind I am sure that someone will be along shortly in this thread to post the address you can send it to from Wyndham. There is no “magic formula” as to what needs to be in the letter, just something along the lines of,
Dear Wyndham,
I am cancellling and rescinding my contract (reference contract number / membership number / whatever they gave you). Please cancel this contract.
Sincerely,
(You and anyone else who signed the initial contract).
Again, mail it certified mail return receipt requested.
If you want to buy Wyndham (and it is a great system), you can likely get the contract you purchased for free or nearly free on eBay. You may also be able to get something with lower maintenance fees than what you bought (read up on these forums and make sure you understand the system/maintenance fees a little better before purchasing, and ask lots of questions).
Bronze VIP benefits are not worth the tens of thousands of dollars you paid for them. Wyndham treats its resale owners very well, and you have the same access to book resorts using points with the same maintenance fees as direct purchasers.