Worst Company to work for

I was a part time merchandiser for Phakisa Holdings for almost 5 years. Sometimes they don't pay on time. If they give you a 3 week contract, you might not get paid that whole 3 weeks the if you complain enough they will pay you months later and even then not the full amount. When you tell them your salary is not complete they ask you which timesheet is missing. When you say you don't know they should ask hr or payroll to check their system, they ignore you. I no longer work for Phakisa Holdings but I have around R2500 outstanding salary they owe me. It's been 2 years I complained but now they've totally ignored me. I asked them to apply for UIF for me and they sent the UI19 form to me to fill out. I told them I'm not sure exactly when I started coz it was years ago and they told me they will check. They don't even know when I started working for them coz when they sent me the completed forms it said I worked for them for 1 week and my UIF is R13 which I can't even claim.