Savings negative balance

I’m so disappointed with Capitec. On the 30th I purchased stuff from Takealot. On my side R460 was debited from account and that was on a Sunday. Monday I received an email from takealot that they have cancelled the order due to non payment. I then decided to call Capitec and they reversed my R460. Then I purchased 5 items which amounted to R575. Received email saying payment confirmed. On the 3rd I transferred R83 to my savings as I wanted to use any other atm to my surprise my savings showed R0.00 balance. On the 4th R137 was debited from my other account to my savings still my savings showed R0.00. On the 6th R52,24 was debited, and today R162,68 was debited and after all these debits I’m still sitting on R0,,00. My issue even if I have negative balance Capitec does not have authority to debit my account without my consent. I want all my money.