Food poisoning

My wife and I had the buffet lunch on 7th of February. Both of us took ill with excessive vomiting, extreme nausea and diarrhoea approximately 6 hours after the lunch. Didn't have anything else to eat in between.

Thought that it was food poisoning and contacted Marius, the manager, the following morning to see if any of the other patrons complained of the same symptoms. He said that he would look into it and call me back the next morning. He did not call, I thus called back a few days later. Marius was not available but I spoke to the manager on duty at the time (Ricky). He promised to call Marius and then call back within 15 minutes.

It's been more than 10 days but nobody has called back.