You didn't get any declines because you didn't ask for any approvals :)
If you mean chargebacks: I believe imprinters had card issuer liability for the longest time, at least as long as the transaction was under the (network-defined) "floor limit".
So if these were relatively low value transactions, the bank would simply not have any standing to decline payment.
If you mean chargebacks: I believe imprinters had card issuer liability for the longest time, at least as long as the transaction was under the (network-defined) "floor limit".
So if these were relatively low value transactions, the bank would simply not have any standing to decline payment.