Pathetic customer service, worst customer experience ever

My account was debited twice due to technical error from the 22nd Oct and its been 8days now I have been cling FNB the whole day every day and not getting what I want, irrespective of how urgent I need the money they don't care. Everyday I have been told I must call the next day and every day has its own story. I even regret opening my fixed deposit at FNB. The consultants at the branches doesn't want to take ownership they refer a client to pathetic phones and still I don't get assistance.