Reversal of funds, what a nightmare

My account was debited but it was due to an error which I understand but when I asked the bank (home loan department) to rectify. I was told that it was an internal error and will fixed to reverse funds back into my account. But it's been 2 weeks and wspeaking to several consultants and my problem is not resolved yet. I am or atleast was happy with most of my bank services up until now that I am dissapointed and you feel like just a number in the queue. As a result of amount deducted in my account, I am unable to pay other accounts and I am now getting notifications of outstanding debt. I have given up but no one seems to be able to help or even just reverse it back into my account.