Momentum rejection

I was with Momentum health since 2016, i have cancelled my Medical aid with them and got a new one. Since i was with Momentum i must pay in, i have a pathcare bill, Melomed Mitchells plain bill, and a Dr Raban bill and a Red cross bill while i was on Momentum, i have a son with Febril convulsions and this only started last year November , so whenever he had a convulsion we had to take him to a hospital, so far the bill has been coming through my ears, while i was on momentum my red cross bill was rejected in the interim of me changing over to a new scheme, Momentum i will not recommend you to anyone, i cannot pay these bill whereas i had a medical aid for over a year and then only started using it but yet claims was rejected, i have been fighting with the hospitals themselves but what can i do i still have to pay theses bills, Please i cannot pay those bills Momentum i was able to use state hospitals but yet you rejected the claim.. I cannot afford these shortfalls