<prompt> Human: I purchased a used vehicle on Saturday from a dealership. I traded in a lease which was about to end, and put 10K down towards the purchase and financed 19K at 1.89. I just got a call from the finance office telling me they calculated the sales taxes wrong on the contract because I traded in a lease, and I owe them an additional 1,500. Whats my recourse here? Do I have to pay them? I have all the carbon copies of the contracts signed by myself and the finance manager. Thanks in advance for any help.Edit: So, this blew up. Thanks everyone for the advice and information and gold!. I dont think theres anything malicious going here, I think they just fucked up and are trying to recoup their mistake. I talked to my boss about it and hes got calls out to some of our clients who are lawyers or work on the financial side of car dealerships. Im going to wait to hear back from them directly before I make any contact with the dealership. I will post an update once I do. And for those of you wondering, I traded in a 2013 A4 lease for a 2013 Q5. I went to this particular dealership because they had the specific car I wanted. Also, its not 1,500 exactly - he just said around that amount in the voicemail.  <response>: Please dont down vote me. ..Im just being honest. I worked at a small dealership in Idaho about 10 years ago and this was a common thing our sales manager would practice just to close the deal on stiff bargaining individuals he didnt like. The owner of the dealership was aware too...not really sure if they ever got caught or how things panned out in the end as I was never the closer in the deals. I just did the luring and the 4 square sheet. 