Worst Bank

So, I did a cash withdrawal of quite a big amount. Did all my payments just to see that there is no longer any funds available. Upon going through my transactions I discovered that the withdrawel went off twice. I phone the bank where the first lady saw the amount going of twice. She confirmed that the funds will be returned to my account within 24 hours and that she will also escalate the matter as there are no longer any funds available in the account. 24 hours later I phone again. This time the story changes to 7 days and that "they cannot confirm weather I withdrew the money or not". So for 7 days I have no funds available. I cannot put petrol in my car or buy anything. Worst service ever. Would suggest people rather stick to the bigger names where they have branches that you can walk in with any queries and ATM's that you can use. It is the banks mistake, not mine. It is my money and for now I must suffer for their mistakes. Taking their monthly account charges into consideration ( wich is alot ), the service you receive is quite pathetic.