I'm angry at how I was treated
What made you so angry?
It's like I always get what I do not deserve
I understand your point, but you shouldn't get angry so easily. You should try and keep calm.
That's easy to say, but it's so hard to do.
I understand your frustration, it is difficult to be level headed when you're mistreated. Try to take some deep breathes and meditate on the matter for a couple of minutes. It will help you calm your nerves.