I want my money ASAP

What’s happening to my money???? Saturday I transferred 500 from my fnb and immediately my balance was 0 and today my friend transfers R3380 and you guys took R408 and when I went to the branch in protea glen a lady by the name of tebogo tried explaining but her explanation was not Valid... how is it possible that a Capitec account can be on a minus and you telling me that I once purchased but the money did not go off my account??? I don’t recall having an overdraft on my account and also I don’t recall swiping or withdrawing than the balance would still be the same.. that’s Rubish I want my money and if Capitec charges are now over R1000 I should just rather leave this bank