Racist Retaurant (Simply Burgers)

I am new to this country, but learned English in school at home. I do have a strong accent, but my English is good. I had a couple of questions for the waiter/cashier and he began to make fun of my accent. I was surprised, but not upset until he used several very strong racial slurs from my country. It shocked me to hear them in America. I have not heard them outside of India. I was deeply offended and asked him where he learned such things. He told me that his manager is from (ducking with an "F" in front instead of a "D") India and he went on the internet to find these miserable things to say about him. I left the restaurant immediately. It is ironic that this rude young white man is supported in his vocation by someone from the same heritage he insulted. I asked for his manager's number and he told me to get my brown ass the F word out of HIS restaurant.