Central Bank Of India — housing loan amount paid but documents not returned

Manager,
i am Bharathi, Co-Borrower of the ([protected]) loan account. i paid all the pending amount of above loan account. i requested to manger for returning my loan security document and he told to give a request letter because the owner(My Father) of the loan having other 2 loans. i submitted requestation letter as suggested and he asked 10 Days time for processing my request. but still we are not getting loan document which is needed our personal issues. My father visited so many time but we are not getting proper response from manager. i heard like he is doing partiality to process my request. when we visited last time he told the reason like "we sent document to regional office still we are not getting reply".

Please process my request as soon as possible because i am personally affecting so many problems because of that document.