No membership card, no confirmation of membership but 5 x R1800 has been deducted without fail

I took out Discovery Health medical aid for my mother in March 2020. Since my mother had been on a Health Insurance Scheme prior there was a 2 month waiting period imposed on her before she could claim, this would have been the end of May 2020 as the medical aid was going to start on 1 April 2020. Since all this there has not been any Membership Card delivered, or even a simple confirmation of cover emailed to the the registered email address ...but every month almost R2000 is deducted from my account without fail.