I have no idea what a 'pesos' is in this context (WOW is an Australian company, it does not operate in Mexico), but your comment doesn't make sense in any case. No one is dictating what you buy. You have full choice in the matter.
The best value you can get from the new card is to not use it and wait for the bonus offers of cash back to get you into the store. This is just like the QFF points that they'd throw at you if you hadn't used your card under the old system. But now these enticements are MUCH more generous and instant.
I stand firmly by my earlier considered statement:
"
It is working for many people. But some dinosaurs just don't like change - even when its good for them."
Here's a link for you to find out more about WOW dollars (not 'pesos'):
https://www.woolworths.com.au/Shop/Discover/Woolworths-Dollar
But if you did actually mean 'pesos' as in the context of this article about Mexican garlic farmers, that may change everything:
http://ausveg.com.au/media-release/aussie-growers-ask-if-woolies-takes-pesos