Oh, BTW, FUCK BETA
If they do that, report it to the card issuer (VISA/MC) . The card issuers are quite firm about how the people who use their cards are treated. Retaliatory behavior not supported by a court judgement could result in the vendor losing their capability to take credit cards. That's a healthy sized hammer.
"'Tis true, 'tis pity, and pity 'tis 'tis true." -- Poloniouius, in Willie the Shake's _Hamlet, Prince of Darkness_