Can someone help me ? Idk where else to go

I bought two HD Fire Tablets from Target a blue and pink one. I still have both receipts unfortunately target time has passed I would say 6 months the Item does say it has a 2 year warranty. I called customer service (Target) they gave me the warranty # which happens to be Amazon I called explain what happen they said they can’t do anything. Sooo I’m just so confused and lost who do I get in contact with? I wanna be able to fix or replace them if possible.