Disgusting treatment after you messed up my order

I am very upset about my order #DFD***. I placed an order with you with Mc Donalds Field and Smith Street, as a treat for my children. My order arrived with one of the children's orders missing. The driver rudely informed me that he would not rectify the order as it was too far to drive and handed me the cash for the missing item. So only one child could eat their order while the other has to sit and watch. When I called your Contact Centre, I was informed that they cannot rectify the order because the item that was missing cost I see R50. How is it fair to me as the customer, that my order will not be rectified, when I never made the mistake. This was supposed to be a treat for my kids who are going through a difficult time and this is what your company does and calls service when you mess up a customers order? I use this service on a regular basis and I spend alot of money with your company so for you to say the order that is missing doesn't cost enough for you to rectify, is a slap in the face to us paying customers. I am extremely disappointed and frankly disgusted with your service, the rude treatment I received from your driver and your failure to fix your mistake. Offering me a refund does not help me and make my crying child feel better. I will not support your company anymore and will dissuade anyone I know who wants to order from you, to do the same. Pathetic.