chased out the restaurant

As regular customers, upon entering with 2 of my friends, we were greeted in a friendly manner as usual and showed to our table. One of the Friends had no appetite so he was just accompanying us.as we were ordering for just the 2 of us, We were told we are not allowed to order 2 meals as we are 3 people in total. We asked for the manager who blatantly refused to serve the 2 of us and seemed perfectly fine for us to leave the restaurant. I am extremely disappointed and disgusted by this as we have been coming here for the past few years on a monthly or sometimes weekly basis. Very disappointed.