where're you writing from?
i've bought it on amazon italy, no imei on my bill, never saw an imei code of a purchased phone written on an italian bill of amazon! o_O
I'm from India, my earphones stopped working and I went to nokia care center, they said that there is no IMEI number on the warranty bill, so we cannot accept it. I tried calling amazon, and they are not at all aware of this, I escalated this issue to them.
in your phone you have an app called "support", inside it a menu called "warrenty status", if you see "active" then try writing directly to nokia, use the chat.
you should have have 6 months of warrenty on earphones
WTF! I could understand this kind of restinction about a mobile phone released years ago, but nokia 8 was released few months ago, a bill with written on "NOKIA 8" it's certainly related to my phone, how they can say a different thing???
i'm really sorry about your situation, nokia care should also start from these "little" things!