Raw burgers

I have been the the Cornubia Mall branch this afternoon and order two wacky Wednesdays, one beef box and one chicken with slices of cheese. When I got home the beef burgers were missing the cheese and the chicken burgers were raw . I had called the branch twice and was told the manager will call me back, it has now been three hours and no response from the manager. Is this the kind of service and meals that steers in Cornubia offers? My order number was 155, I want a refund from these people , their customer service is really pathetic. The manager doesn't seem to care about the customers or the franchise because serving us with raw burgers should have been an urgent matter for them to attend to.