CAN I STOP VISITATIONS RIGHTS FOR AN ABUSIVE BOY FRIEND

You can do so if you have a court order allowing you to do so. I am sure your jurisdiction allows you to go into court when time is of the essence to get such an order.

My standard disclaimer: I am not offering legal advice, assume I do
not know the law in your state or at all for that matter and that I am
just making suggestions for starting points for when you do speak with
an attorney. Do NOT rely on anything I write and contact a lawyer in
your area immediately after reading my posting.