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First customer gave me his entire card number and could not accept the card as valid with gateway. He sent me check in the mail.
Second customer I lost.
Third customer used a visa card after about 4 emails.
Now, I will never know if MOD 10 check fails to identify the card as actually legit because clients provide CC before they even pay.
So, serious business lost for many and I haven't heard a peep about it.
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