I'm currently an undergrad without much experience in publishing scientific papers. Due to the pressure of many of my teachers and peers, I felt the need to get something published so I contacted an open access journal to publish a review paper I initially made for a class.
I initially submitted my paper in good faith thinking that it was a legit journal as everything seemed to be in order at first, but after I submitted my paper I started seeing some alarming red flags all over the place. The most alarming one was that the peer-review process lasted only a week and resulted in no major changes to the article other than changing the citation style. They are now asking me to pay a huge sum of money which I cannot and do not want to pay considering that I'm possibly dealing with a predatory journal. I even tried asking for retraction of my article but they are asking me for a withdrawal fee.
So, has anybody been in a similar situation? If so, could you give me some advice into how to proceed? To be honest, I don't care that much if they go ahead and publish my article anyways (which I've heard some journals do) since they got my name kinda wrong in the final version. Also, considering that this journal is US-based and I'm in Asia, is it possible that they'll take any legal action if I don't pay?
P.S. I have not signed any sort of document to transfer the copyright of the article to them.