Thanks for the response Time Traveller ! Yes, certified/return receipt. Probably overdid it a bit as I even took a video of me preparing the mail envelope with the rescission letter in it and then took a photo of the mail envelope with the stamps and receipt at the post office ! That just shows the level of anxiety I am having now and how it is extremely important for me to cancel the contract. I was trying to replay in my head how we ended up signing a bad contract (unclear savings advantage, lifetime commitment of increasing cost and uncertainties, ridiculous high interest, no clear affordable exit, etc..) , then I realized that pressure they put you under such as tag-teaming, badgering, won't accept 'No', long hours like small room police integration (I never been but saw from watching TV), that you simply end up justifying a bad deal and taking it so the madness stops, at least temporarily. Because it won't really stop there as it is just the beginning of a lifetime stress and anxiety and no clear ending which can ruin finances, relationship, health and won't be surprised if people die because of this. The rescission law is great but I think more can be done. I consider myself a strong-minded and very patient person, but the kind of effect it has in me now makes me wonder about how others dealing or dealt with their situation.
If my rescission is successful, I will be saving about 20K + years of interests which can easily end up paying double. I will also be saving things that cannot be measure by any dollar amount.