My card was charged twice by Ptounx (ptounx.com, ptounxb.com and more) on the same day. I had to dispute it with my bank. Ptounx (ptounx.com, ptounxb.com and more) 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: Personal attention|Dedicated account manager
Cons: Help articles are sometimes vague