Dstv balance shock

I had a debit order for 30November 2019 but It bounced so i did cellphone payment via the self service portal. It said i am owing R239.99 so i paid R200 so I dont get disconnected as I didn't have money yet . After a few days I wanted to pay the balance but my account showed R0 outstanding balance. A day later my pvr stopped working and I called multichoice I was asked to pay R19. I told the agent I couldn't because the balance is R0. My service was terminated and I was told to pay R79 to reactivate. I still couldn't pay because the self service doesn't allow payments I'f balance is R0. Today I am owing R787. I'm shocked. I cant believe this. I called three times this month but this balance was never conveyed to me.now my service will be terminated because I dont have that money. Why am I treated like this?