Ifci Family Bonds — Re-issue of certificate no. 379539

I had applied for one Millionaire Bond for which I have also received the above mentioned certificate but the first name has been inadvertently put as S ISHAR SINGH SUDESH CHADHA which otherwise should have been in my name Sudesh Chadha. I have written to M/s MCS LTD., Sri Venkatesh Bhawan, 212-A, Shahpur Jat, New Delhi-49 many times with the photocopy of the above said certificate. But so far I have not receive any reply. So, can anyone help me.