Twitter hacked?! Help!!?

[primadonna]

I'm nit talking about spam, I mean someone prick posing as me. They claim I left myself logged into a public computer, although I don't use public computers, I use other's iPhone's to check my twitter... anyways how can I make sure they are unable to hack me? I've changed my password multiple times & it seems to have stopped but I'd like to be sure. Thanks!

[what?]

Change your email that you have on your twitter account, then change your password again.