FNB service disappoints

I have reported here already regarding the incorrect billing on my FNB tablet account. For 2 years now FNB refused to correct my balance and rather deducted monies ********ly from my cheque account claiming i have to pay the tablet. After my compliant here i received a call and a gentleman assisted me, finally FNB admitted that the balance was incorrect and it will be corrected as I now need to pay R230 to settle the account. I also requested them to erase my negative balance from my cheque account due to the fact that i did NOT transact on the account and I left my account empty due to the fact that they debited it ********ly as mentioned above. No one could be expected to deposit money into an account if the bank takes it immediately proclaiming I owe an amount on a tablet which now they admit was incorrect. 4 months later and the balance is STILL incorrect on my FNB profile and the cheque account fees are NOT yet erased. They rather blocked my cheque account and continue to display the incorrect amount. They also refuse to refund the monies they ********ly deducted from me. They proclaimed at the time I was in default but two years later clearly I was not! DISAPPOINTED!