Slimy, soggy food, very rude treatment

Many South African restaurants and fast food establishments treat customers poorly because they get away with it. We ordered burgers from Bella Pizza in Lakeside today. After waiting 2 hours we called to ask where our food was and they said they had been at our house but when they called to be let in, the cell number I gave (that I've had for almost a decade) doesn't exist. They then came back and gave us the same 2.5 hour old soggy slimy mushy food that had clearly been sitting around. I called to ask for their email address to send pics of the food, but the owner said they have no email address. So I told him politely that as a regular customer I was disappointed by the quality, and he proceeded to blame me, becoming aggressive and rude including saying they \can't remake food every time a customer doesn't answer their phone". When I suggested it was likely he had taken down the number incorrectly"