The worst treatment in and out of hospital!

After being admitted to hospital in April due to low Iron and High blood pressure, I was left to bleed excessively for hours after a small procedure despite asking the nurses for assistance multiple times!!! Only after they checked my HB and saw a massive drop was I rushed back into theatre for an emergency operation to correct the bleeding. Shortly after discharge I received the invoice from the hospital. I emailed asking to please pay it off over 3 payments and 2 months, and paid the first 2 payments. I was then TOLD by Netcare to not make any additional payments as they are disputing the shortfall with Discovery. Today I get a FINAL notice from the hospital for payment. WHY if I was told to not pay, are you now demanding payment within 1 month!???? I was not the result of the non payment. This is very poor taste and is causing me massive amounts of anxiety and stress.