Credid rescue did not pay me because I am sick

So I started working at Credit rescue in Feb as a closer. I signed a contract with SETA which is an internship that pays R3500 and Credit Rescue tops up with R2000 which makes a basic salary of R5500. April 23rd I got sick at work and went home and got admitted in hospital same day. My dr wrote a sick note for me that says Im still in hospital and will only be able to go back to work on the 3rd of June.

I sent the letter to my team leader which apparently stopped working there a few days after I sent the letter. I never got any response to say I wont get paid. Sent some texts to our floor manager after I ddnt get paid and he didn't give me any explanation as to why. Did I realy not deserve to atlist know why am I not getting that R3500 from SETA? Did I realy not deserve to get paid? Now what about my debts? My kids schools?

What kind of company doesn't pay its employees when they're in hospital? I really need some answers and since they're not willing to give me, I will see what to do about them

This is not the first time that they do this, they dont pay sick note, if you are sick and you go to the dr, they will deduct R250 from your salary, whether you submitted your sick note or not