My card was charged twice by MyCurrencyExpert (mycurrencyexpert.com) on the same day. I had to dispute it with my bank. MyCurrencyExpert (mycurrencyexpert.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: Full transparency|Dedicated account manager|Regular updates|Fast support response
Cons: No fractional shares