Invited my friends to celebrate my birthday. 16 pe...

Invited my friends to celebrate my birthday. 16 people total. We were having fun racing and most of us paid for tree races. At the end of the second race. The manager there starts yelling at my friend. Accusing him of racing when the cation flag was out. Turns out that my friend was not the person that was racing during the caution flag, but that didn't change his attitude at all. Instead he became worst. It's been 1.5yrs and I'm still pissed. Never going back.