I had the same issue a couple of months ago. The problem was, I mixed up the card that was used for verification. I advise you to contact support, they'll help you.
Is verification process is hard to complete? I'm just confused whether should I need to verify or not?
For me it wasn't too difficult and took less than half an hour. Maybe situation will be different for you. I've had all the necessary documents ready. If you're more curious you should read the verification guide or contact support.