Debt Collection Misidentification

I got a summon from the fabulous Asset Acceptance LLC, claiming I owe about $1000 to a Capital One Credit Card acct. I have personally go to Capital One Bank branch to find out that there is no such account under my name. And I got the information that it is someone who has the same name as me but with a totally different SSN, DOB and address. However, Capital One is unwilling to help me further, like giving me some document on paper that verify I am not that account holder (even I am a customer of them, don't you like Capital One's attitude?). I have answered the complaint and denied the allegation, and the court day is coming near, I want to better prepare myself for that and I would like to get some suggestions from this board.

Basically, what should I be expecting to see in the court? And what should I prepare and bring? What do they have to supply to proof their case, that I am the owner of the account? I just don't think they could have any evidence at all, but I am just a bit afraid they might use dirty tricks, like somehow, somewhere got my SSN and claim that's a proof. I know debt collector could do that tricks and I have seen it in another case that involve this same person who default on another credit card (the bank in that case is more helpful). Does Capital One has the obligation to supply me the document since they have the final indisputable piece of evidence?

Also, is there any way I can recover the wasted money (court filing fee, postage, time lost to work on the court day, etc) when they are proven they have completely no basis in the allegation?

Thank you very much in advance.