My card was charged twice by FXS High Asset Mining (fxshighassetmining.com) on the same day. I had to dispute it with my bank. FXS High Asset Mining (fxshighassetmining.com) then froze my account and said I had a negative balance because of the chargeback. They created the problem and then punished me for it.
Pros: Good mobile app|High security standards|Tax reports included
Cons: No fractional shares