Unfair labor practice

Dear hellopeter I'm matimba I'm working at tekkie town is been 4 years now... But the treatment there is not good at all I feel like they are falling us during the festive I worked for 8 or more days for free because they blocked me they said I have exceede my hours and they didn't pay me overtime but I was coming to work.... They don't care about us saff they only care about the customers on top of that they give us 3 days off in months