unacceptable and negligent service

I have had the worst experience in dealing with this medical aid provider. I have been trying to contact them to resolve a chronic medication dispensary issue with no avail it has gone months now that I have not resolved this issue and I have been forced to purchase the medication on my own when this is supposed to have been covered under chronic and PMB. the call center has just been pushing me from one person to another with no resolution I have sent through emails with no responses. for a large provider such as them the service is as low as a backdoor provider .my medical condition is chronic and as per the law I have a right to my medication to be covered under PMB yet I am paying exorbitant premiums for the medical aid and still cannot receive my medication which has now further deteriorated my medical condition,.