System issue causes double payment

Yesterday I made a payment from my business account to a former employee, the system was timing out evertime when I had to authorize the payment on the app. I checked the account and nothing went off so I made the payment again which now resulted in a double payment because later on the payment went through. This has placed me out of pocket of R1500. I went to FNB to be told it takes 14 days and cost R298, by then the person would have withdrawn the money and i would have lost a further R298. Thats ridiculous, with Capitec their recalls cost way less and takes up to 2 days..... 2 days!!! Due to your own system issues I must now just accept that I lost R1500.