No feedback, inefficient and worksystem a ''mess''

I overpaid an over due account, I am struggling to get my refund of access funds paid. I left the fund August 2015, I have since been getting threatening letters that I am owing them money, even thou I could not understand the reason why I owed them, I decided to pay them any way, so that they can get off my back.<br> <br> I got 2 ref no's from the *********** staff members, who kept on sending me all over the show, without offering any helpful advice. Their systems are also as useless as the personnel operating the<br> ***, ***<br> <br> I do not feel it is fair that I should suffer the fact that they decided to change their fund administrators, if its them that got my money, as they claimed that I owe them. I strongly feel that its their sole responsibility to refund me my money without all this unnecessary drama they are subjecting me to.....<br> My banking details have since changed, I have given them my new banking details , several times, yet nothing is being done to get me my money back