admin, October 7, 2021October 5, 2021, News, customer complaints, top 5 complaints, unhappy diner, unsatisfied customer, 0 1. Restaurant cleanliness or safety concerns 2. Food or drinks don’t meet expectations 3. Poor restaurant customer service from crew members 4. Slow service, late deliveries, long cook times, and wrong orders 5. COVID-19 concerns and complaints Get the solutions