WORST BANK TO DEAL WITH, THIS IS *****!!!!

I stopped my debit order and to my surprise, FNB goes and debit my account again and now i have charged of declined purchases because i thought i transfered enough money to this account and now i cannot dispute the debit order. I THINK IT'S HIGH TIME I CANCEL THIS FNB ACCOUNT!!!!!!!!!! THIS IS REDICULOUS!!! YOU ARE BECOMING THE WORST BANK EVER TO DEAL WITH!!!! I WANT MY MONEY BACK AND THE DECLINED CHARGES TO BE REVERSED!!!