Disappointed in Affinity

I was admitted to hospital on 13/9/2022 for a sepsis and urinary tract infection who made me unablie to urinate, after a prostate biopsy. I was discharged on 17/09/2022 with the catheter and still not able to urinate. The dr in the hospital referred me back to my urologist as he was part of a different hospital network. I visited him twice, where he removed the catheter in the hopes that I would be able to pass urine - no success. I do not know all the medical terms, but long story short, my prostate and something else is pressing against my urine canal and I must be operated on. Asking Affinity for pre-auth they said that they will admit me as a continuation from day 5 as this is related to the previous admission. How is it my fault that I was discharged with a catheter and how was I suppose to help that I need an operation now. They want to authorize R5800 for admission and expect me to pay a shortfall for R29500. This is ridiculous.