Bonitas when will you provide adequate and not even good customer service

I have never been satisfied with the service of Bonitas during my membership with them for a period of 18 months. The exhorbitant medical aid and the customer service is just not at the required level. I terminated my subscription in February 2018. I received an email on the 17th from Bonitas advising that I have an outstanding amount of R2476.94 which needed to be paid. I completed that payment on the 17th August and requested that I receive a breakdown of what this payment is for. On the 21st of August I received a mail indicating that my request will be forwarded to the correct department for information requested. To date nothing had been provided. It is interesting that payment requests that are issued are without substantiation. When will service be provided at a competent level from Bonitas