Bad bad bad service

Myself and my wife went to kfc in Mitchells plain in the plaza, we bought 2 wicked box meals and were told 15 minutes wait, firstly why don't they have any prepared but not the point, once we received our meals we discovered that both mash and gravies were the smalls and even they were half as well as the coleslaw.when I brought it too their attention I got this disgusting attitude from lungi when I proceeded to call her she cleaned her teeth (tsssskkk) and when we received it again she asked me with the worst attitude like i was in the wrong for checking my order \are you happy now"...... never again will i buy at that kfc mitchells plain plaza pathetic attitude to have."""