Annoying calls

I got a call from one of the TV licence consultants and explained to her that I am no longer employed and seeking employment, hence I am unable to make payment. I got more calls from the same people and keep saying the same thing over and over again, what is it that I need to say for them to stop pestering about the same problem that gets the same answer over and over again. I am aware about my arrears to sabc but this is unnecessary to call and sms me daily. PLEASE SORT THIS MATTER URGENTLY,ONCE IS ENOUGH!!!!!