my usb flash drive not working code: SDCZ52-008G-B35

I want to know, how i can exchange new one with in warranty / garantie period : this usb i purchased in Delta peropherals in chennai on 6th feb 2012 and tax invoice no: VCB24946

If you can’t return your defective product to Delta Peropherals in Chennai then you need to contact SanDisk at