Hey,
So in your situation you are pretty much out the down payment, some websites like MESCAM say that you can get a settlement by giving the timeshare company you're dealing with a bunch of negative publicity online. However I don't think this will actually work anymore, they we're doing this stuff during the infancy of the internet.
You have a few options with very limited success potential.
You can contact PROFECO and file a complaint if you have evidence that you were served alcohol and you were intoxicated, or that they misrepresented what they're actually giving you. Though even if you have sound evidence PROFECO is just a mediator and cannot enforce the vendor to pay you the amounts owed. You would have to hire an attorney or represent yourself in Mexican Court.
However the part of your contract stating that it's governed by the laws of Florida does give you the opportunity to file a complaint with the Florida Division of Consumer Services, I haven't dealt with them but perhaps they might have more authority than PROFECO.
Your best option is to stop paying all together, it is worth noting that they absolutely can sell your debt to collections and it could potentially affect your credit score. Though with that loser making legal threats against you says to me that he's just peacocking and trying
Thank you for your input. I have already sent an e-mail to PROFECO complaining about misinterpretation of service by Sunset Royal. With regards reaching out to Florida Division of Consumers Services, I am not sure yet if I have to do it at this time but I will surely hire a lawyer if this has become a legal issue here in the USA. For now, I will do whatever I could ( and from what I gather here in TUG) to get over this matter. And if stopping payments affect my credit score then be it.