Promotora Sunset Beach Club Premier Vacation, Sunset Travel, The company refuse to honor the 5 day grace period to cancel or resind the aggreement and refund the downpayment. Cancun, Internet

I received a call from premier vacation offering several vacation option such as 5days/4 night Cancun, 5d/4n Bahamas Cruise and 5d/4n Florida for the price of $599.00. All I have do is to attend the promoter presentation for 90 minute, maximum of 120 minutes. Stupid me, I accepted the offer and book my first vacation to Cancun, Mexico. Our accomodation is at Ocean Spa. The next day, I attended the presentation and it took 5 hours. The representative keep on talking about Sunset Club, a total of 4 resort in Cancun and offering other  vacation resort in other places around the world for a fraction of a price. I felt pressure after the presentation thus ended up signing agreement. On the 2nd day after signing the contract, I was able totally grasp the purchase agreement and decided to cancel the contract. In the claus #12 it state that I can "cancel the contract within 5 business day after signing." I also notified the sales representative by e-mail. I received a call from the representative saying that I will not received the down payment instead he is offering me a much lower price. I insist on cancelling. I told them that I will send the letter via Fed ex. I call the Amex but they told me that since I authorize the pay by la, they have to pay but I told me that I can dispute it.