Bad service

I am truly disappoint with the service received from Discovery, since May 2019 I have been calling the company to send me membership cards since I added a dependent but they have failed to so, calling them and being advised that they are being couriered is nonsense because they never send anything. Today i called in after so many calls about the same thing then the agent hangs up the call in my ear. What kind of service does Discovery give!!! Because this is ridiculous service, for the amount one pays for medical aid and they fail to send membership cards...