Bad manager servise after other customer is making fun of my spouse and i because we are ***.

Went to Panarotis Vaal Mall for supper. We placed orders and all was good. Next moment waiters started singing happy birthday to my spouse,it is deffinately not her bday.I got up and ask the waiter who instructed her to do that..she said the guy next to us...he was laughing and making fun of us he was also drinking draughts while we were there...i told him that that is uncalled for he was just laughing...we moved to other section by that time we lost our appetite ad we were so embarrassed....i called the manager and his response was that the rude gentleman is your old customer and he is always entertaining people by making them laugh... I will never set my food in Panaroties. Again i was embarres with my spouse because we are ***.... Your manager only rep**** that he does not want to get involved! In his restauramt!!!! He was more worried about us paying for our drinks of less than R50 than about our privacy that was invated!!!!