Mr failed my children D

On the 26th March 2022 i ordered KFC from work to send home to my kids to eat as they were hungry. I said it will deliver by 13:30 told my daughter to look out for the driver. I got busy with customers and couldnt answer my phone. Eventually i answered it was my daughter asking wheres the food they hungry. I then checked my app and it said delivery unsuccessful. I then called the 087 number and no response everytime i tried calling and holding on. Then i receive an email at 18:37 to say they wont be able to refund me R339 as this is my second failed delivery. The first failed one the driver couldnt even speak english me trying to explain that i work in a mall. And the second time as explained above. I have been with MR D for years as i love takeaways at work and at home to receive this kind of service. My kids had to wait till 18H00 to eat. If you had answered my return call this could've probably been resolved but no service. This is rediculous. Can i please just have my refund.