FNB left me stranded!!! Dont honor their side of any commitment.

I have been unemployed for six months. Altough I communicated with the bank, help was non existent....although I did not ask for any money. Arrangements were made for funds to still come into my account, but FNB at first freezed my account, without notifying me. Then forcefully started reducing my OD, again without notifying me. Once I started working again, the arrangement that was in place with regards to my personal loan, have not been honoured and the bank once again without notifying me, deducted 3x installments at once, leaving me out of pocket by almost R 8500. Upon contacting the call center, I have been told there is nothing that can be done. They just shift the blame over to me! I would understand this if I didnt communicate with them, but I did numurous times. My own bank is at the moment my enemy in creating a poor credit scoring!!!! I consider opening a new account somewhere else and to let my new salary be paid in there. At least I will be able to control my cashflow.