Dreadful service

Went to Cedar Square for breakfast. Had to yell to get served after 10 minutes. Was told menu choice was unavailable, asked then for breakfast, poached eggs also unavailable, without mushrooms but rather a second sausage. Arrived with mushrooms! Asked for rectification, got charged R16-00 for sausage ! Called customer service - needless to say NO response or feeedback. Unacceptable?