Coughed on at the bank

This incident happened at a bank in Bellevue, WA.
It was both a bank teller and customer that kept coughing at me. The customer (female in her late 50s) saw me and started coughing. Then I told her "back at you." She then did an evil smirk. Then the bank teller (male in his late 20s) started to cough and the customer kept coughing at me. I was being helped by another bank teller whom I apologized to and said that since the pandemic, I’ve experienced racism and I'm not even Chinese. That's when both the bank teller and customer stopped coughing. Then I asked the male bank teller for his name and he gave me hateful looks and made up excuses to not give me his name. All of this was caught on the bank security cameras. The other bank teller that I was talking to was nice to me and respectful. However the male racist bank teller was still giving me hateful stares.