I just want to add something for you, ad everybody else, to think about.
Think of why they are picking on you.
Then think, can you change those things?
If you want it to stop, then you change those things that you can.
If you can't physically change them, there's nothing you can do, but unless it is physically impossible, you can change it.
Don't try and change them, or try and explain why you do something they don't like, it's not worth the effort. It's you that must change, not them. Harsh, but true.
If you want it to stop, you will have to change, or it will always be the same, and the longer you act like this, the more normal it will become, and that is a bad thing.
As a suggestion, get fit and build yourself up physically, go to martial arts lessons etc. Find another activity other than a computer, such as a sport. If you think 'no way' to these things, then you do not want to change and be accepted enough. Do you want it to stop enough to change?