FNB - now loan sharks

I took out a temporary loan from FNB on the 22 /08/2018 and they took all the money on the 27/08/2018 and paid 13% interest for 4 days. I took out the loan for unforeseen expenses that I had to pay for dog that got sick, I always keep my money in their savings pocket account and the weekly transfer money for my weekly expenses, I took out the loan for the unexpected expenses that I had to pay, then when I transferred money from my savings to my account for my weekly expenses they took everything for the temporary loan , now I'm exactly in the same position that I was 4 days ago...………... So I paid them intertest for exactly nothing ……..