Woolies owes me money and had the worst customer service ever

I ordered groceries and a pot online in 17 November 2022. I paid for delivery to take place on 18 November 2022. The pot was delivered on the scheduled date but my groceries were not. On 20 November I went to the store in Richardsbay to get urgent assistance which didn’t help. All I got was two phone calls telling that they are investigating the matter. Upon my return to Pretoria I decided to go do my own groceries at the store. I spent a significant amount of time requesting for my money back in a form of vouchers to spend at the store since Woolies failed on its “click, pay, and deliver” promise. I received the vouchers but Woolies refused to pay back all my money. Their reason was that they had to pay for delivery but this delivery never took place. Woolies. I have been inconvenienced great and ****** of my full refund.