TERRIBLE SERVICE

I placed an online order for my parents from New Zealand and it was delivered to the wrong address when my dad told them where the area was they said they cant change it. So my parents lost R900 worth of food. They are old and pick n pay didnt give a continental **** about it. Even after my sister spoke to them they said they delivered it to the wrong address and my parents lose the food. Its shocking that they went ahead and delivered it knowing it was the wrong address. Im so upset my parents are old and need help and pick n pay just said ***** you. Im in New Zealand and cant communicate with them its so frustrating that pick n pay didnt give a damn. What can be done about it?