DISGUSTING & ******* SERVICE

On the 25th of July i ordered a whistling kettle which was R99.00 and couldn't check out as the order was less than R100.00 therefore i ended up adding a 2L Stoney so that my order can be processed. I was charged R35.00 delivery fee which I accepted and paid. Few hours later the order was delivered, my daughter signed for it as I was not home at the time of delivery. When I got home, I was greeted by a big brown bag with ONLY 2L stoney. I have never been so angry as I feel this is a disgusting and deceiving service. Why did it allow me to proceed with the order if the item was out of Stock? Why would I pay R35 delivery fee + R20 tip which was given to the Driver in cash for an item that is R19.99. The annoying part is that the R99.00 was automatically credited in my wallet account which I feel I am being forced to use this ******* and disgusting service. I have been sending requests to have my money refunded to my bank account and been unsuccessful as I WILL NEVER EVER USE THIS SERVICE AGAIN!!! so, it's okay for them to deliver an order that is below R100.00 but not possible to place an order which is below R100??? I want my delivery fee, tip and the R99.00 reversed to my bank account not my wallet account or have the Kettle delivery at no additional cost.