Account on minus for honoring dos on an empty account!!!

People will say Fnb is so expensive il defend it not until this month!!! My account is on minus with 900 for honoring debit orders for capitec funeral plan and double debit for fnb funeral plan! I had no money on Saturday hence its on minus I had 500 stashed at liberty where I requested it because I'm building as u can see so many transactions in my account! Now it was swallowed by the negative on my account for debit orders that debited on empty account! Can FNB fix this coz I chose Zero account for a purpose! Can those debi orders be revised so that I can get my 500!I'm stuck here now it shows 412 after my 500 yesterday !!! And please cancel the fnb funeral plan as well if it will double debit on an empty account!! I need my 500 instantly..