Department of Education owes me 5 months salary!!!

I was appointed to a Gr. R Education job at my school by the Department of Education, Eastern Cape, in October 2015. I have repeatedly called, and still do, to ask when they are planning on paying me my salary. It has been 5 months now, that I am working everyday, giving it my all to the learners without any payment. When will this stop??They have given several promises of paying my salary, but still nothing has been paid. Getting fed up now. Doing my work, but they are not doing theirs.