Irregular deductions by Capitec Bank

Capitec just debited an amount of R200 in my account. They sent me a message that it is a with I made on the 02/02/2020 . How possible on a savings account? When money is drawn from a savings account it gets out and then reserved until such a time that it's processed. Does it even take 90 days and if it does why deduct new money. I have been checking my statement in the past months on the app and it never showed no unprocessed funds to that amount. Is this ******ion? Maybe a new way if *****ing money from clients? This has inconvenienced me big time