Unpaid hospital bill

Good day<br> <br> I was hospitalized two weeks ago due to severe headache. When I was in hospital I went to a cat scan as my forehead was swollen.<br> Its then that they discovered that I had chronic sinus.<br> <br> After I was discharged I learnt from Waterfall Netcare that Topmed doesn't want to pay my bill as I didn't disclose that I had sinus.<br> <br> Firstly I didn't know too that I had sinuses as they never bothered me before. Even with my medical history I have never taken medication for sinus.<br> Secondly when I joined the medical, I disclosed things there why would I leave the sinus out.<br> <br> Now the medical aid is threatening me that they are going to terminate my contract.<br>