Staples

I was insulted by a Staples' employee named Khemraj today. He threw my business cards to my face when I was writing his name in order to submit a complain about his bad job.
He hadn't printed my order by the necessary time. Then he promised to do that in a five minutes. In a thirty minutes I told him that I have to go. He hadn't printed anything by that time. He said that he was doing me a favor printing my order. I said that I don't need his favor, because I'm paying money for the service. If he couldn't provide the service then he should have told me about that before and I would find another place. Then I began to write down his name. When he saw that he just threw my business cards to my face saying - "You want my name? I'm doing you a favor! Here, take your cards!".
It happened in front of many Staples managers, employees and customers. Unfortunately managers didn't let me to submit my complain. I've contacted the Corporate Customers Care Department. The guy on the other end of the line listened to me and promised to call me back and tell the number of my complain report. Unfortunately he hasn't done that.
I was crying because I was felling terrible about this situation. I haven't done anything wrong. I just wanted the good service.
I don't want to leave it so, because if that guy would still work he might even fight with customers.
Please let me know what I can do in this situation.
My email is [protected]@gmail.com