Classof1 Avoid using at all costs, Internet

Submitted some questions that I was having with on my homework and the solution that their so called tutor was 100% plagiarized from Wikipedia and other various websites. Also, the solution was almost totally incomprehensible. I'm not sure if the tutors first language was English or not but I highly doubt it. On top of that, I asked for a refund and they avoided me. When they finally did respond, they told me that if I did not drop my Paypal claim, they would post my personal info and credit card info online. Then they also said that they would get their lawyers to find out what school I went to and tell the university and my professors that I asked them for help. Totally unethical company and one that does not have any standards at all. They won't give you a refund so don't even bother. I would recommend avoiding them at all costs.