Lenovo laptop
Laptop offer not received

I purchase a lenovo laptop from advance computer, jalore (rajasthan) at 31-10 and in this product i choose diwali offer and registered at lenovo website. i print out this registration number. i sent photo copy of bill of purchased laptop, registration and original sticker of purchased laptop to channel technologies, A74, sector 2, noida 201301, phone 0120-4080804/4080830 and offer received in three month but not received at now. so please claim my offer. thank you