Product: Vehicle loan or lease

My complaint is because XXXX XXXX XXXX and Exeter Finance sold me an unsafe car with the warning error sign on the dashboard and the car sometimes switch from automatic to manual transmission by itself and would get slower and lock up the car while I'm driving in traffic ... the sale man and mechanic said to buy a new battery... .and I did, but it doesn't work well. I feel like the car is unsafe. THEY SAY THAT EVERY CAR IS SENT THROUGH A CHAIN LINE INSPECTION and 100 % APPROVED BEFORE BEING PUT IN THE CAR LOT FOR PURCHASING, SO IF THIS IS TRUE, WHY WAS I SOLD A CAR WITH THE WARNING SIGN ON THE DASHBOARD AND THE AC UNIT TO BE FIXED, THESE PROBLEMS SHOULD HAVE ALREADY BEEN IDENTIFIED AND FULLY ADDRESSED BEFORE BEING PUT OUT ON THE LOT TO BE SOLD ), which shows it didn't meet the standards to be sold in the first place. 
On XX/XX/2022 I financed a car from XXXX XXXX XXXX, WHICH I HAD TO PAY {$2000.00} dollars UPFRONT, by law it say if I get a loan from a financing company that I don't have to put any money as a down payment, and which XXXX XXXX made me pay a down payment of {$2000.00} dollars... The salesman sent me to the back of the shop for the mechanic to fix the warning sign on the dashboard, after 5 hours, he could not get it fixed... the mechanic then went into the dealership and told the sales man something ... ..the sale man then came outside and told me that the ac doesn't work. And he will get it fixed... .I said yes for sure do it ... ... the mechanic took the car back to the shop and bought it back and gave the keys to the salesman, ( So the salesman came in back inside the dealership with the final sale papers and said, it's fixed, so I put my signature on the paper ), We then walked out to the car, then the salesman told me he doesn't have the original keys to the car So he got one made ... .I said ok ... .he then started up the engine... ..when he did the warning error sign was still there... ..and I already signed the final sale papers.. the salesman told me to come to get it fixed on two occasions and it was never fixed, I just got the run around. I tried to negotiate with the General Manager but he was very rude and confrontational, and I didn't get a chance to explain why I thought I deserved to have another car, ( THE GENERAL MANAGER TOLD ME THAT I HAVE A WARRANTY AND, WHY DO I NOT USE IT ) ..but why should I use it when this company says ( THAT IS PUTS ALL ITS CARS IN A CHAIN LINE INSPECTION WHERE THEY ARE FULLY INSPECTED AND 100 % FULLY FUNCTIONAL BEFORE IT'S PUT OUT ON THE LOT TO BE SOLD. ) ( XXXX XXXX WANTS ME TOO TO COME IN AND TRADE THE CAR IN, NOT FOR ANOTHER ONE BUT TO SEE IF ANOTHER LENDING COMPANY WILL GIVE ME ANOTHER LOAN, ONLY TO ADD IT ON TO THE EXISTING LOAN I ALREADY HAVE WITH EXETER FINANCE, I REFUSED TO DO SO, BECAUSE IT DOESN'T HELP ME AND THAT ONLY ADDS MORE MONEY UNTO THE LOAN THAT I ALREADY OWE. ) I have a complaint in their system... .. Now this is about Exeter Finance ... ( IN THE STATE OF FLORIDA , BUY LAW IT SAYS THAT THE MAXIMUM APR THAT A LENDER CAN CHARGE ME IS 18 % AND EXETER FINANCE IS CHARGING ME 23.44 % APR ... .. AND {$14.00} INTEREST PER DAY ... AND I'M PAYING {$590.00} PER MONTH ), Please help me, you guys are my last hope, I don't know what to do as my head is under water with these payments I can't seem to start paying the principal as every month I keep getting into more debt with Exeter Finance and my payment are only going towards interest, I owe more money now, more than the actual loan given to me by Exeter Finance , which is ( {$2300.00} ), because of very high interest rates. please help me I don't know what to do next, I need help.