Shock/ Horror behaviour by waitress at restaurant

Very upsetting! We sat at a table and had the waitress scream across the restaurant that we should write our names on a wall. I embarrassingly walked up to her and told her no problem but that she had just embarrassed us by screaming at us in front of all the customers. She simply said "Fit in or Fu*& Off" We couldn't believe this treatment. We left angry with my wife in tears. NOT what you want going for dinner. The WORST part was I called the next day and spoke to the manager with the promise of the owner NIGEL calling me and he didn't care enough to even pick up the phone and call back. I write for a Food and Bev blog in Europe and will be sure to mention this appalling service and treatment.