fedhealth poor customer service and communication with clients

been on the medical aid for almost 2 years the customer service is the worse I have ever experienced , they don't communicate with their patients , no correspondence sent , nobody even calls to follow up on your queries . they rejected a claim for admission with incorrect ICD codes , doctor motivation letter sent with correct icd codes and I need to follow up and find out the progress , nobody explains why claims get rejected you will be put through several depts. everyone asking the same questions but no help , medical aid is expensive in this country we expect key customer service atleast especially when you are so prompt to deduct the payment