I just got my new 2010 acura tsx today. I later figured out that the manager had tricked me into getting a 70,000/7 year extended warranty for around $1650! Its from acura care, but it costs atleast 1000$ less when done in the acura care website. Basically he was willing to reduce the interest rate by 2.34% if i get the extended warranty and I fell for it

, jumped in too quickly without thinking.
Is there a way to cancel this now? Will I get my money back? The warranty is through the acura care website.
I really wanted the warranty, but not at those prices!