****med of medical aid savings

I just got ****med, I received a notification on email, discovery claim of R508.40 for purchase done at Southern Rx Pharmacy in Sandton, the claim is back dating to 24 May 2023. My Medical aid savings balance was still reflecting yesterday when i last checked as this is linked to my discovery banking app. I am so worried that if they can so easily access my medical aid savings, what more of my discovery bank account:-(