Please be aware! Just purchased a car this week fr...

Please be aware! Just purchased a car this week from here. When I signed the paperwork (which for most part was on a tablet that only asks for your signature)the terms an final amount financed were never disclosed during the financing. We had agreed on a deal during the sales process. I was to turn in my lease and finance a new car. The sales guy, Antero, kept telling me how it would be a wash with the lease and I would just be starting over. My father and I asked multiple times if anything would carry over and the sales guy always said no. That was not the case. They not only LIED to me about the amount financed ( they added negative equity) but also wouldn't give me a copy of my contract.
Financing process and events goes as follows: After signing paperwork on the tablet( only signature line) that fills in actual paperwork when I left I was handed an envelope with only my GAP insurance receipt but no contract in sight. The following morning I received a call from Johnny to notify me that my car was ready to pick up. I asked him to please give me a copy of my contract as they had not done so and he says "of course I will give that you with your car keys." Later that afternoon when I got to the dealership I only received my car keys and once again I asked for a copy of my contract this time to Tariq which is the one who financed the deal. He tells me "I have mailed your paperwork to you so you should be receiving it soon." I told him "well shouldn't you have a copy for yourself that you can show me or get me a copy of." He said "no." So I left feeling pretty uneasy that day and decided to come back the next morning. The next morning when I come in I am greeted my the receptionist and asks me what I need help with. I said "I need a finance manager please." She calls him but he is busy so she asks what it is in regards to. I said "I need a copy of my contract" I wait and then he shows up some time later with a copy of my contract.
I look over it and realize that there is a total of $30,000 being financed. When we were in the finance process the amount pointed out to me was $25,000 so this whole I am thinking it is this amount. This comes as a surprise to me so I ask why am I being charged negative equity since I asked from the beginning of the sales if anything would roll over. He says "you have to speak with Tariq." He should have told you this. I was never informed of this. If I would have known that I would be financing $5k extra I would have stuck with my original plan which was to finance my lease.

Please take this into consideration on your next purchase. I made the mistake of trusting these people so make sure to look over everything.