Accel Frontline/moser Baer 4Gb Pendive — Submitted Pen Drive for servicing, the company is not responding after that

I submitted Moser Baer 's 4GB pendrive to Accel Frontline Services Limited, 601-604, Ashok ABhawan, Nehru Place, New Delhi - 110019, Ph:[protected].
I submitted the pendrive to the company on 23rd Jan, 2010. I was told that I would be confirmed about the product in next 15 days. Now it's more than 20 days and there is no body picking up the calls even to give me any update on the product. Every time I call them up, the phone rings and is disconnected. This is height of their callousness. I wish somebody could respond to this complaint.