Lenovo — Webcam purchased not working

I purchased webcam of Lenovo .it worked for two months now it is not working .I took it to Lenovo store they gave me customer service number i called but some of their numbers not working finally i got customer care representative he told me that i have to call the spares department gave me number but this number doesn't go trough .i bought this cam for my daughters online classes but it is lying idle .bought this product trough amazon called up amazon they say contact Lenovo i don't know if this representative are making fun of its customers. let me see now how and when this webcam will be replaced by Lenovo before warranty or after warranty.