Vesta AT&T Unauthorized Charges Portland, OR Internet

I have never done business with Vesta, but they somehow came upon my card information.  Two charges appeared nearly simeltaneously - for $25.00 and $50.00, on 10/11/16.  I contacted my credit card and the charges will be reversed.  There are a number of complaints lodged against this company online.  Perhaps they aren't doing a particularly bang-up job checking people's identities? Or worse? Anyway, I can't imagine Mastercard or Visa will let them continue to operate after the number of chargebacks a few minutes of casual googling can find.