I think I did and it was my fault for not being meticulous. I bought a used car from a Nissan dealership, certified and all. They were to throw in a free 100k warranty because the car had some mileage and they wanted to make a sell. In the speed of setting up the loan with a 3rd party, trading in my car, and paying down a couple thousand, I didn't notice that they charged me $1,500 for the extended warranty. Doh. I just found out today, six months later, as I'm sitting here doing my taxes adding up how much I spent in sales tax.
Not a lot of resource in store for me.
One wrong number on her check? Annoying, sure, but at least you're not out anything (but time). : (