If you had paid with a credit card, a chargeback would be easy.

I suspect that your only easy approach here is to -- again, everything in writing -- to Chase, noting that the offer does not fulfill the terms of the contract. Make certain that you provide the specific outtake and note that the only way to refund is to get your points back.

If that fails, you are stuck with a small claims action against Chase and SA. Many states only permit these for specific dollar amounts and you would thus have to have a documented and supportable means of valuing those points.