Unhappy and very frustrated with Discovery Health

Frustrated with lack of feedback and no update for payment made to Discovery Health! My previous medical aid had a shortfall of R373 after closing it. Initially disputed this because I had paid my last claim from my own pocket. Anyway, I eventually paid this shortfall and sent through the proof of payment for allocation of this payment. I sent the proof of payment to a consultant called Lizette, and this was on the 26th of June, no feedback even today. I have followed up because I still get calls despite having paid this and to top it all they listed this on my credit report. Discovery Health, why hasn't this payment allocated, and payment updated and remove this listing from my credit report? I'm extremely infuriated by this, how inconsiderate can you people be. Please rectify this immediately because this is affecting most things currently including my job! And please send me an update on the follow up email that I sent earlier today with the proof of payment attached again.