Poor after sales service for missing item

On the 20th of August, I made an order with Mr Delivery. My order number was DFD***. Firstly, the delivery was 25 minutes late. This is unusual. I've ordered from Mr Delivery on many occasions. To wait outside in the cold, with my son excited about his Happy Meal, isn't fun at all. When the order eventually arrived, I asked the driver whether all the items were there and he rep**** positively. Unfortunately and to my son's disappointment an item was missing. I immediately logged a query on the app, but the after sales service was poor. I dealt with Sibulele M, Saarah D and Ntombekaya T. None of them were able to resolve my query and in fact their response was that they cannot help me; it's not Mr Delivery's responsibility to make sure all items are collected. The only compensation I received was a R15 coupon. R15 coupon! Are you kidding me? What a slap in the face!