bad service

I have had my account with FNB for a very long time and just recently I don’t have a permanent job, I have been working part time and the company That I worked for transferred my salary into my bank account on the 06/10/2017 the very same day I withdrew the money from my account, The company still owed me some money so on Saturday I checked my account on cell phone banking, and I saw that I owed FNB +- R700.00.

I went into the bank to query this and I spoke to a consultant who was not only *********** but also Rude. She said that my account has been closed and FNB returned the salary to my employer, She could not Tell me how it was possible for me to withdraw money from my account if there where no funds in it,

FNB never sent me notification to advise that my account was closed and in the first place was I allowed To withdraw money from a closed account. Only once I queried the amount did they start to send me a few sms.

I do not see why I should suffer for the pathetic service from my bank, I have contacted my employer and they Have advised that my salary was paid to me, FNB needs to take accountability for there mistake and they also need to teach their customer service consultant how to deal with a customer, Because I don't know is not an answer,