With my chip&pin VISA I observed that card terminals with additional customer PIN pad offer the DCC option to the cashier after entering the PIN even though the PIN pad displays the amount in PLN only. In Poland be suspicious with English text on the PIN pad display, e.g. AMOUNT PLN 150 ENTER PIN and check carefully what the cashier is doing on his terminal after the PIN has been entered.
Ugh that is non compliant you entered your PIN for a different amount than you were charged. The networks need to get more serious about enforcement.