Rude agents - demanding and

This morning I received a call from a call center agent from FNB, I advised her that I cannot pay the full amount and can only afford 1K per week due to me being unemployed, She said that she does not care and she will deduct the full owed amount and I asked for her name and told me she does not have a name, I did not authorize for her to deduct the full amount. FNB has disappointed me I will have to consider changing to another bank that understands me and that is willing to meet me half way, bad service very bad.