Bad Attitude from the owner

I ordered the tenant's breakfast and paid for the bill. I noticed a few minutes later that I was billed twice. I went to the restaurant to complain about that. We then called my bank which confirmed that I was billed twice and they will wait for the merchant to bank the money then reverse the second payment. Joanne Lund the owner of Caffe Frappe then said it is not her problem nor her fault, and that this happens everywhere. Why am I crying for such little money? I explained to her that it maybe little money but it is still my money. She then told me in my face that she is tired of our **** as tenants in the center and she does not need my business. It was quite obvious that she lost her temper because I am a tenant in the center and that I am black. My being black and tenant meant that I would do nothing about the situation, and she showed no concern about my dissatisfaction.