Nandos Rosebank service

I placed an order for my colleagues with Nandos Rosebank at around 10:33 today 27/07/2018 via telephone and we went through the order twice with the lady who was assisting me and she told me that my order calculated to R1050. I went to collect my order and when i got to the office we notice that our order was 4 items short. I called Nandos and told them that my order was incomplete. I was transferred from pillar to post. I had to call them 3 times just so i can speak to the manager. Finally spoke to the manager and she adviced that they can deliver the remainder of my order but it will take time or next time when i order from them again they will give me credit amounting to the full amount if my missing order items. I asked if i can just come in and get something that is worth that amount and she said she will call me back in 30 mins. This was around 13:15. It is now 16:16 and i still haven't heard anything. The customer service is very poor. I was literally ****** by Nandos and they don't even care