FNB Temp Loans

Ive got a temp loan with FNB. They took all my money from my account. My work paid it in my account for travelling and Ive got an 8 month old baby that need milk and food. I was not aware they will take it as soon as money comes into my bank account. I thought they give you at least 30 days before they take their money. Im in a mess now. FNB please help. I spoke to the call center and they was not helpful but they gave me a reference number: ********** . Please FNB help me with this issue!!!! If this is not revers then I cant travel and attend my meetings or buy any milk and food for my child and pay the day care