extremly bad customer service

I m very disappointed @ the service rendered @ 1of our local restaurant which I alway recommended 2my friends. The service I received 2day was extremely poor & not professional @ all. We were only attended after 30min since we arrived after we demanded 2talk 2 the manager by the name on Nhlanhla. But still was not impressed coz our waiter kgotso took long with our order like he 4got us. 2top it all he left us & went outside the restaurant without even checking if we r ohk or advising us that he will b back. . I m never evr going the again & will not recommend people 2go the. I felt lik I was undermined. I've never felt so humiliated & couldn't even enjoy my food. I m an angry customer who day was spoiled