POOR CUSTOMER SERVICE AND BAD MANAGEMENT

I will never understand why FNB would without any attempt to contact a customer just go ahead and block such customers bank account after making ******* debits and deduction from their customers account t without the customer being aware. This is a **** from the bank by the same bank which promised integrity. I can not imagine that it’s just a new month and I needed to pay my bills and clear debit order only for me to get stuck because somebody for their personal reason has decided to tamper with my account and claim to be investigating a *****. How do you just do this without prior contact with the customer. I did t even know anything has happened to my account and got how long until after 2AM. Do you people just randomly witch-hunt your customers or this is some vendetta? I have never been a party to any ***** and this is happening randomly without a notice from the bank to me. What was the motive?