Discovery Health incompetence

My husband and i opened a discovery health essential saver medical plan.all has been well until last week when he called them to get clarity on something and the *********** staff captured our information as if we have cancelled the medical cover. Now today we go to a doctor using the medical aid only to be told that the medical aid will not pay because we have cancelled it. Discovery service can be so disappointing because at this point we considered to have cancelled the medical aid without our knowledge and worse of all we were not even on any waiting period now we might have to reapply and do the whole waiting period **** because of their incompetency.