can a bar owner ban a customer from his establishment without stating a reason?

I used to work at a bar, one day I came into work to find a replacement for me and was fired on the spot with no reason stated...nevada is a right to work state. The policy of the bar is a three month "cooling off" period for fired employees. It has been six months and the owner still will not allow me to enter the bar. When I asked for a reason for the refusal of service he would not give me a reason, he wouldn''t even have a conversation with me. I was a good employee and patron for a very long time and can''t think of a single reason for his not allowing me in his establishment. Is he legally allowed to ban me from his place of business without stating a reason?