We discovered that AT&T has allowed PaymentOne to put FRAUDULENT CHARGES on our business phone bill. We contacted AT&T and they did not seem to care. We looked into PaymentOne and their website boasts about how they can get up to 25% additional "revenues" added on peoples bills. Translation: AT&T ALLOWS PAYMENTONE TO PUT UNAUTHORIZED CHARGES ON AT&T ACCOUNTS. PAYMENTONE GIVES AT&T A KICKBACK OR PERCENTAGE ACCORDING TO THE PAYMENTONE WEBSITE. I personally beleive that AT&T knows about it and allow... read full review »