Fedup

Hi, I would like to know from Fnb, why was there an EDO attempted on the 25 August, amount of 643.71, I would like to know who tried to deduct this and why, I don't have that debit amount and my debits don't get deducted on that date, any fees that was charged from my account must please be reversed. I I'm really beginning to dislike Fnb. Please respond to me asap and I don't want that automated responses, thank you.