Half made burgers

Went through the drive through and ordered a few things. When we got home, I realized one of my burgers didn't have a patty on. Phoned them a few times (but why should they bother answering as they really couldn't care about their customers at all) left a facebook message which nobody bothered to respond on. Definitely the last time I'm buying there! Paid R50 for a burger I couldn't even eat!