"Listen Huns, I m not pissed off with you, I m just enjoyed that you didn’t tell me it’s like you doing something, and me not telling you, and do it to you. If you told me, maybe I might to you bit upset but rather hear it from you, than feeling stupid. That’s just worse. It doesn’t matter whether you think how I listen, your just hurting my feelings. Imagine I found you",
I can't say anything at work place I just want to change the environment, when I asked her to out with me so she said I got a boyfriend even thou v r just a friend, and now I changed my mind.

Does anyone tell me what that note mean?

The only person who can tell you what the note means is her-she wrote it. All else would be guessing. Ask her.

She is telling you that your disrespecting her feelings after she told you she has a boyfriend, and she no longer sees you as a friend, and leave her alone.

Take the clear hint, and leave her alone. You have been rejected from romance, AND friendship.