Hyundai Verna — misplace ment of cheques by your company

my loan no;is l.a.f.e.r[protected] on the name of ramesh kumar.actually the problem is that we have given some cheques to icici bank for our car loan.but now they are saying that your some of the cheques are misplaced so give us the cash payment.and this is the big problem for us that if we gave them cash money and the cheques too than we will have to pay the double amount.so please give us the written that its the mistake of your company that the cheques are misplaced and please cancel those old cheques.after that we are ready to give our new cheques.