Job interview Dilemma?

There is not much you can do as you are between addresses. You need to explain your situation to them. Phone them now and explain . Better to do it before the interview.
UK

Get a utility bill and then explain it.

Why don’t u ask Roger the head hunter?

What country are you in?
If in the USA, the job is a scam.  Never would you need to bring a utility bill to get hired.  They are likely going to want you to buy something.

I can't guarantee for the rest of the world, but I'm pretty sure it's a scam anywhere. 

as stated in the US they would never ask for a utility bill the only one that will which is just 1 option is the DMV that i know of and this is just proof of residency.

there is a list of documents you can bring with you if you do get hired but that is IF you get hired they shouldn't be asking for it unless they plan to hire.

bring what you can, let them know your situation, end of story. sounds like they are expecting too much imo. just like my job they tried making me do a 2 day job in 1 day. no way in hell i can do a 2 day job in 1 day. chef told me i work the line today and i haven't even finished training so it's pretty much gonna be on his @ss as this is things i should be doing versus working the line