Unfortuntely in my experience the Police don't follow up these breaches as well or quickly as they should.
I'd agree with what mercia has said and requset the panic button to be installed as they will turn up an awful lot sooner than in the situation you've described, and it help with your peace of mind a little too.
I'd also agree with getting s social worker and having any furhter visits at a neutral location.
Best wishes to you, I hope you can sort things out.