Today, during my break in the workplace's coffee room, a colleague who is not very well-liked by most people came in. He is an assistant and does not hold a high position in the company. I greeted him politely and shortly after, two low-paid contracted cleaning ladies arrived to prepare the coffee.
The colleague told them that the space was only for employees and that they shouldn't be there. I interrupted and explained that there was no rule prohibiting contracted workers from using the coffee room and that they were welcome to prepare coffee there. He argued that this was not fair because sometimes the coffee ran out faster and we had to wait for the next purchase. I retorted that this was a problem for the purchasing department to solve.
At that moment, the Human Resources Director entered the coffee room. As I was visibly upset, I told him the story. The director called the colleague for a private conversation, and as a result, he received a suspension for misconduct.
Now, the colleague is angry with me and says that I should not have told the director because he received a punishment because of me. He also said that the suspension will affect his salary and that I am a terrible person.
Although I did not say anything to him, I am questioning whether I acted correctly or not. What do you think?