SANBS Promotes Abusive Employees

I went to donate blood and experienced the worst customer service with one of SANBS employees. I reported the matter to his manager who also didn't take my complaint seriously and left it like that without making an effort to come back to me. I reported the matter again and I think the area manager or whatever she is called me and she said to me that guy was doing his job. I didn't know employees are doing their job buy being rude to customers and throwing highlighters to them. She than insinuated that the other two employees didn't notice what happened so that meant I was just making this story up. We ended up not having a civil conversation because she kept on standing up and making excuses for the rude employee. And even told me they have dealt with the matter but didn't wanna disclose how, Im the one who raised the complaint and given how they handled the situation I Dont even believe there is something they did. You cannot promote and abusive employee especially to clients who donate their blood. We aren't forced or paid to do so, so the least you could do us give us great customer service. I didn't donate that day and still haven't because of what happened and how it was handled. I Dont even think I will ever again.