making me run after my own money

I by mistake transfered money in to the wrong account,I called to stop and freeze the money the very same time and was told by the call centre agent it would take up to 7 working days for my money to be transfered back in to my acc.that happened on the 9th of january 2015,its now already the 5th of feb.iv called them about 9 times so far but every single time I get the same response that they are trying to contact the person who I sent the money by mistake..funny enough that each and everytime I phone that person I get a hold of her.really upset about the fact that iv got to phone and beg for my own money