CARD never works at Pick n Pay

Whenever i try to use the Card at ANY pick n pay, It never works. They have to Wrap the magnetic strip with paper and 3 out of 10 times it will actually work. I can go to Sportscene now and pay the account and it will work fine, Then 15min later go to pnp and use the card there and it WILL NOT WORK.. does not reject or anything, just does not pick up. then 15min after Pnp, i go to Game and it works just fine.. Like seriously