O'Reilly Auto Parts review: Person unethical behavior

I went into an O'Reilly's store at 1725 Fry Blvd in Sierra Vista AZ. on Sunday, March 14, 2021. I have a disability that prevents me from wearing a mask, and I have to use a crutch to walk. He yelled at me and threw his fist at me screaming "GET THE [censored] OUT", as I attempted to explain He resumed his screaming saying "I don't give a [censored] about any disability" throwing his fist at me and he was reaching his hand behind his back and when his hand came back to the front of his body he was coming around the counter with something that resembled a fire arm and I was scared for my life.
I have been doing business with O'Reilly's for at least 5 years and have never had this happen.
Do you have a policy stating that it is OK to physically and verbally assault members of the public with the threat of, or intentionally physically assaulting disabled American citizens including imminent death? Is this a common practice?