poor service Discovery insurance

Discovery health insurance refuse to support me with a blood pressure monitoring device as per recommended by my heart specialist Dr. Du Toit in Port Elizabeth. Discovery health insurance are using excuses like the savings account has ben used up, etc., common practice in this case. A lot of people are complaining about the same poor service and had changed already the insurance company. Insurance companies like Discovery are only interested in making profit instead of helping and supporting their members. I strongly advise to do not choose Discovery as a medical health insurance.