The first time I had inadvertently pulled both my EFTPOS and credit cards out of my wallet together and when I swiped the EFTPOS card the terminal took the payment from my credit card.
The second time I had my EFTPOS card in my right hand ready to swipe it while holding my wallet in my left hand. To use the terminal I had to pick it up with my left hand which I was able to do while still holding my wallet and you guessed it the terminal took the payment from my credit card which was still in my wallet.

There's a couple of things that bug me.
- I never wanted the paywave function on the credit card, you don't get a choice.
- Once the transaction has been completed the retailer will not reverse the transaction.
Does anyone know of a way to to stop paywave? Can you scratch off the chip and still use the magnetic swipe?