Vitality Debits without prior notification and whilst im still on 3 month FREE window period

I recently joined discovery key care plus in November 2021. My monthly premium is R1279 they offered me free Vitality for 3 months i did not agree to join Vitality and than today i noticed that you charged me full amount of R254 this month as well. I only had funds in the amount of R1279 in my account just enough for my medical aid contributions to go off but you they debited my account in the amount of R1584. When I signed up I didn't want vitality it was free at first. Now I'm sitting in a huge problem in that there was only sufficient funds in my account for my medical aid premium to go off and they debited my account for R1279 and R254 for Vitality. Since there was insufficient funds I now have a returned debit on my account and I have incurred bank charges for additional R115 which means I dont have funds to pay my medical aid this month. I have now started the year with a return debit and that negativitely affects credit ratings. Vitality this is unacceptable. I did do an email to them they now canceled Vitality but I still incurred bank charges.still awaiting their response