J.D. Byrider review: total rip off

I bought my first car at JD By Rider in Parkersburg, WV. I told them I was going through somethings made sure I upped my payments.During this time I've had to replace my muffler which wasn't even welded on it jus hung there bout to fall off. My speedometer stopped working after 3 months, I ended up getting a speeding ticket because I didnt know how fast I was going. My car has stopped on me 3 times. When I got pregnant I got laid off now that Im 6 months pregnant I got layed off I tried explaining it to my payment lady. They refused to work with me. Even after I told them I have my unemployment coming on the 26th they just said I have to have it by saturday the 25th. I even offered to make double payments. The lady was straight up rude, and threatened to reposess my car. Here Im stressing and having complications with my pregnancy enough as it is and she's trying to make me stress out even more. I even told her after my unemployment comes I'll never be late on a payment again. But she still refused to work with me. What is a single mom to do?