Pick 'n Pay and Vitality card

Did my monthly shopping at Pick 'n Pay Summerstrand as i always do. Buying most of my veg and healthy food because of the vitality savings making it more convenient and desirable. At the till the cashier rings up my total which came up to R1566.95. She swipes my smart shopper, then my Discovery vitality, the Vitality card does not register, and she trys again she calls another person, who says they have been having problems with the vitality cards for some time already, there is nothing they can do, by this time the queue has been piling up. I accept and leave. The next day i go to PNP Uitenhage, to test the card and is works fine. If PNP knows that the vitality cards are not working on their tills they should inform patrons before, and make an effort to correct the problem.