403:The request is understood, but it has been refused Twitter Android

I had this same error and upgrading to the latest version of twitter4j 3.0.5 (at the time of this writing) fixed the issue.

Get the latest here http://twitter4j.org/en/index.html#download

EDIT: I should mention that the version i was running was twitter4j 3.0.3. So by going to version 3.0.5 or 3.0.6 fixed the issue for me.