O'Reilly Auto Parts review: unethical behavior; cashier

On Monday July 29, 2019 at 5:48 p.m the cashier an older Caucasian guy with bushes grey hair with eye glasses asked were we all together I replied no (2 black guy comes in before my son and I) as we proceed to walk to the counter behind the other party they went to the cashier to the far right as we proceed to ask the guy for our purchase the cashier told the guy he had it right there so we were in the process of switching cashier two Caucasian guys walked up and the cashier told me and my son that they were in front of us and started to check them out my son and I left because his intention were not right and he knew he was wrong and I feel like if he does that to another person of color then things may not go right if he doesn't like black people then he shouldn't be working in customer service something need to be done and I will be contacting the Better Business Bureau