Woolworths online store Craddlestone

Honestly not happy with their online store. Placed two orders on seperate days for the plum juice to collect today. I now get a call that my order is gonna be cancelled because the item was reduced to clear and they dont have stock and can’t substitute. I fully paid for my orders and online it said they had stock now i will have to be refunded and the inconvenience is too much. Calling an hour before collection time? Totally un acceptable this was at woolworths cradlestone. I do not want a refund!!!! I need a solution!!!!