Received Court Claim Form from Cabot Financial (Capital One)

I wonder if anyone could help!!

I have recently received this Court Claim Form from Cabot Financial about a credit card debt from Capital One. I don't remember having this debt, so I am really confused. I did apply for a Capital One credit card in 2008 or 9 but they retracted the application after they approved it, so it was never used. Please help. I need to know what to do next?

Received Court Claim Form from Cabot Financial (Capital One)