On the website the deal is "FREE Heineken silver when you spend $25 or more"
However when I placed an order just now I added a case of beer and added 36 Heineken Silvers for free.
Steps worked for me:
1. Add more than $25 worth of beer
2. Go to the cart, there should be a message to add 1 Heineken silver for free
3. Edit Quantity
4. Check the total price, should be unchanged.
1st store rejected and refused to sell
I went to another store, the store worker knew of the website glitch and said he would have done the same if he wasn't working. Legend.
Thanks for the tip!