I ordered a medium pizza from them

I ordered a medium pizza from them. On arrival the guy took out a small box. I asked why small. I was told to phone pizza baby self. What I did according to them the they only have 2 sizes. Meaning when you order medium you get a small and then large would be medium. Not happy at all for R110 I would rather order from another pizza place where sizes are correct. And the pizza is very oily.