Queries not sorted out.

I have changed from medical plan 3 months ago. Not one of my debit orders, went through my account, i follow up with my broker, where she confirm, discovery will sort out the problem. I have send numerous emails, with no response, only a consultant will come back to me., and that was not happening. I made a payment on the 4 July, after confirming the amount with Discovery.TODAY IS THE 13.07, AND THEY SUSPENDED MY MEDICAL . I WENT TO MY CHEMIST, AFTER PAYING MY ACCOUNT,FOR MY CHRONIC MEDICINE,THAT WAS ALSO DECLINED.CAN SOMEBODY PLEASE SORT THIS MESS,