Not paying Doctors, labs and hospitals for maternity

I moved to Discovery about a year and couple of months now, after taking the savings plan and being assured all will be paid for I find myself spending a fortune with my pregnancy Gyn visitations, they don’t cover for scans only 2 scans and the rest is on you I’ve already spent so much paying for the medical aid and still having to pay for all these outstanding costs amounting to more than I spend a month. I had previously used the best medical aid which I never even spent a cent with my 2 kids delivery I was going to all the check ups and were fully paid at this point I’m getting messages from the doctor, gyna and the hospital I settled last years bills from own pocket and now I’m being told they couldn’t even pay for blood test what sort of medical aid is this and the worse part is I’m not yet due which is even worse.

No one will give answers as to why their fees are so high and they hardly pay for the services?