I assisted an elderly person in our family with some shopping due to their limited mobilty and not being able to drive. After selecting some basic goods I chose to have them go thru a staffed checkout line. When they inserted their chipped mastercard into the card reader slot it displayed "Card Error". The cashier stated you have to insert 3 times then it will allow you to swipe it. After swiping, the message the cashier got was "vendor declined transaction".
The card was at that point locked.
Why did this happen?
The card was at that point locked.
Why did this happen?