Useless Anglo Debt pretending assesors

I would like to know if there is a way to report them to the NCA,they have been calling and harassing me,calling me a lair and threatening me that there is a warrant for my arrest thinking I dont know my right and the legal process,a ride lady called Yolanda,they do not deserve to work with customers as they don't even have tlc,I has left my job due to depression but that didn't stop them,its shows they are only after our money,idiots