VISA and MASTERCARD offer customer the ability to dispute ANY transactions Many gamblers are using this tactic with online gambling sites. If I deposit and lose, I charge it back" These customers are much more hostile.
Las Vegas discussion forum - Online blackjack manipulation experiment, page 2. If you dispute the charge soon after, the merchant never gets their money. The credit .. Deposits into an offshore gambling account? Wow.
So, short version, when disputing an online gambling charge, and the casino used a third party vendor, how could you be in the wrong? How to Get Your Money Back After Engaging in Online Gambling.