I have a problem
 

People constantly harass and insult me on threads. And i try so hard, but they keep at it.. Any advice?

You can't harass and insult people and expect them to just take it.

My advice would be to ignore them. There's a nice little thing called the Ignore List where you can make sure they don't bother you. Try that.

I agree with Bubbly

or tell them to f&#$ off!

:o Do you have a specific example?