Absa Personal loan harassment

I'm paying a loan with Absa. Yes my loan went into arrears because of financial problems. Than an arrangement was made with them that I'll be paying an extra 500 to make up for errears. They take the errears. But I'm being told I'm in errears still but they taking money to make it up. And I received a call the previous day that I'm on track with paying the errears. And soon I'll be done with the errears. And the next day I get a call that I'm not on track and I'm still back to errears amount that I have been paying for to fix the errears. I'm paying as client to avoid this calls o saying I'm not Latin but now today te lady tells me I'm not paying my account when I have been paying. Where is he extra amount that I've been paying going to.