I traded my old car for a new one last May 2019. S...

I traded my old car for a new one last May 2019. Since then everything I have gotten from this dealership are problems. I'm still calling and visiting them to get solutions because they keep rotating employees.
Here is a resume my story:
I stopped one day to check out my options for a trade in but then we decided to wait until next day after seeing other brands. The seller said they'll keep they car they showed us with a 'Sold' sign in case we want to go for it and he remarked it was brand new with 20 miles on it. Next day, we informed them we got a better deal and didn't want to continue the buy. So they called the manager and after negotiating, we agreed to start with the paperwork.
After 4 hours waiting, almost 10:00 pm, they took me with the Finance manager to sign my papers. Obviously I was tired and stressed of waiting and only wanted to go home. I signed everything after a brief reading on what each document was but didn't put attention on details (MY MISTAKE). They agreed to compensate me for the long wait and gave me some accessories for free.
Next day, I saw the car had 250 miles instead of 20 as they car they showed me had. Result of receiving it at night, tired and in a hurry. (My Mistake, again).
First problem: One month after I bought my car I got a letter from the bank, saying my credit was not approved. So theoretically, I was driving a car that was not even mine yet. So I went again to Honda to try to talk with the finance manager but he was not working there anymore. My case was taken by a different employee, ran my credit again and gave me the new approved quote. That was when I noticed, the initial price for the car on the contract I had signed one month before was higher than the one we had negotiated at the beginning and because my mistake of not checking the details, it went through as it was. They said they cannot do anything since I had already signed. Again, my bad. One month had already past, so they gave me another permit for my license plates.
Second problem. With the trade, they agreed to pay off my previous loan immediately at the fixed price we settled at that moment, but I continued paying since I didn't see a payment from Honda and my credit could be impacted due Late payments or No payments made. After many calls and visits to Finance department, 2 month later they paid my old loan, but surprise, the amount on the check they sent was for less money. So I had to call them and go again to the dealership to speak with finance. Again, the person was not working there anymore and they took me with the Finance Director, nice guy who was trying to fix all the mess other employees left. Reason of my problem - They had not sent my documents to the bank immediately, and they called my previous dealership, asked for the amount due (after I have made 3 more payments) and they sent the check. Honda agreed to reimburse me the difference. We were on July already. My license plates permit had expired so they gave me another one, again
Third problem - By August, Honda called me saying they have my checks. So I went immediately to pick them up and deposited them by using my mobile app. 2 week later my bank sent me a letter because one of the 2 checks was rejected and I needed to contact the maker (Honda). So guess what. I called them, they didn't pick up so I stopped by once again. Not a surprise, they assigned my case to a new finance employee who was taking care of it. By this time my license plates had already arrived (After 3 months)
Fourth problem - It is December now, my new check has not arrived, I called the person who was helped me. He replies back - 'Please contact Melissa. I don't work there anymore'. This is when I decided to write this review. 6 months since I bought the car and I'm still calling them every week to get problems resolved. I took my car for the first service already, just a simple oil change, I go back home I see the Service notification turned on, because the oil life level was at 10%. They said they forgot to reset it, but honestly, I doubt they had actually changed it!