I always understood that with a Debit Card one could only use it, draw cash from ATMs etc, when one was in credit.
This morning, inadvertently, I withdrew 300 euros from an account with less than £100 in it, thus I was overdrawn. I do not have an overdraft facility on this account.
Some time ago I was told that it is possible to use a Debit Card as a credit card. I had not believed this to be possible but it would seem that is what I did today.
I am on the point of sending a Debit Card to my wife's cousin in Phil, to replace the CASH CARD which we have been using for some years to transfer money. (Cash cards are being withdrawn by Nationwide).