Most banks do not need those supporting documents to open a savings account. Only selected banks' branches / staff want to be so particular about it. Some staff like to make it difficult for customers while other times it is their superior who issued the instruction. It is not a valid reason for an unemployed to be denied opening a savings account although I have heard that excuse before. Where do you expect people like housewife to keep their money in? Milo tin? You can actually complain to the bank's HQ or Bank Negara if you don't mind the hassle. I suggest to try another bank / branch though.    
Btw, it's 8x/month.