FNB Devices disappoints

I have taken out a device with FNB in April 2012. In 2013, ***** took place on my account confirmed by the ***** department and my Cheque account was frozen. The personal Banker at FNB, Adderley Street contacts the Device department explaining to them of the problem at hand also asking whether the debit order can be taken off my Smart Account instead, the contact person agrees and promises to switch the debit order. I also informed the contact person that my balance is incorrect on the device account as at the time I had made 17 successful payments towards the device and 6 months were remaining, NOT the 13 months as indicated by the bank. I received an email from the individual admitting the balance is incorrect and she will fix that as well. After an oversees trip i return to South Africa in November of that year to find out my account has been given over to Blake and Associates. The personal Banker and I have tried ever since to get my account away from legal as I indeed made arrangements. FNB refused. Gave me terrible service and instead deducted the monies they say I owe them from my Cheque account without my consent. My Cheque Account is now in the negative due to this.Unhappy