Hmmm....I am not sure about the Starpoints. I don't know if they can take them back or not??? Either way - the value of the Starpoints is not worth the extra cost of purchasing from the developer. But keep the AMEX - the "free points" you get from every day purchases are great. We use ours for absolutely everything and get 2 free tix to Hawaii every year.
As far as rescinding, the instructions are in your purchase materials - and you need to follow them exactly. I don't think that the wording is critical, just make it short and very clear.
Gentlemen:
This is your official notice that we are rescinding our purchase within the required recission period as stated in our contract.
Contract Info.: XXXXX
Please reimburse the full amount of $$$
Please contact me at your earliest convenience at: (xxx) xxx-xxxx
(signatures of both spouses)
The most critical thing is that you rescind within the stated time limit, so you need to do it ASAP. I would send it certified mail - return receipt and also FAX it. Then follow up with a phone call.
Note that they will probably try to talk you out of rescinding and may even sweeten the offer....but don't do it... If you rescind, and then later decide you want the deal after all, they will be more than happy to give you the same deal (or a better one) next week, next month, etc.
Let us know how it goes!