terrible service lost order

terrible service we ordered our food at 14 :17 we were num 48 waited waited and i just ordered a large chips anf rolls ..all the customers that ordered after us left woth there food i asked wheres i chips, the lady said its coming..14:55 she asked for i slip apologizes they lost the slip they didn't know what we were waiting for , but nobody asked. we received our food at 15:05 terrible service,