Biggest regret!

I traded my previous car at auto pedigree Vredendal during Oct 2018. I have tried to trade for a cheaper car more than once now, seeing that I am currently paying R5100 some odd for my volkswagen polo tsi (2017 model). All the dealers I've spoken to keep on telling me that I was ****** by auto pedigree. I now can't trade seeing that I have a massive balloon payment!!! A few weeks after I started asking questions about my monthly payment Ibwas told that the salesman who sold the car to me, was fired!!! I am super angry and really regret doing business with auto pedigree.