So I Guess I Bought A Car?!

I need legal help.

So I live in utah, and I went to a dealership. I saw a car I liked and asked if we could run some numbers because I was curious if I could afford it. I asked for an APR and and loan and deals, and they were like yeah let's run the numbers had me sign a few thing and then said "congrats on your new car".

I did not want to buy the car i did not make a loan to buy the car but they said it's all in the paperwork I signed. And even though it's the weekend and the credit unions are closed they said I had already bought the car. And escorted me out at closing after I kept trying to say I can't buy this car.

I did not get a bill of sale I did not get a copy of said paperwork

Also I asked how much I could get on a trade in and they did the same thing where they had me sign some paperwork and then asked for the keys to do a value check, and just took my car.