Get a R1350 adidas voucher to a empty online store

I received R1350 Adidas voucher which can only be used online and another problem is that you can't use it with product that is on sale. <br> <br> SOOO almost all the product on the online store are on sale (so could not select these) and virtually none of the products I wanted had sizes in store ( I am a medium and a ten shoe which is pretty standard). <br> <br> WHAT A GRUDGE purchase!!!