Abusive unprofessional recruitment company

This recruitment company sent CV's to us, hoping to serve our business. They were pushy, so the matter escalated, and another affiliate from their organisation called me. He slandered me, called me a **** amongst other names, as I said the CV's were being reviewed still. He further threatened to ***** our staff, then called our office and was unprofessional and impolite to other staff. It was actually a scary experience to say the least.