Department of Home Affairs - Spousal visa not answered for 2 years

I have been married to a south African for 5 years and I have been living in South Africa since then, for the first 2 years of our marriage I got my spousal visa for 2 years, thereafter I applied for renewal which was rejected after a year, I then applied for an appeal which I have been waiting for the response for a year, I do not understand the reason for not granting my visa, as I am married to a south African, I am a house wife and do not conduct any business in this country , I have all rights to live in this country as my husband is a south African, all my documents are in order, but I am now stuck in South Africa for 2 years without been able to return to my country, or visit my parents.