I have been through this very process with NY and Citibank.
I personally wouldn't delay it. You know they are not going to deliver so why wait? Also keep in mind that NY will purposely ignore your bank when they try to contact them. Heck even their bank wasn't responding to Citibank. That and Citibank being inept was why mine took about 4 months to be processed in my favour. In my case Citibank wore the loss only after I made a complaint to the ombudsman.
If you haven't already began the process of making contact with NY etc I would get right on it so you can quickly move to the chargeback.
And? FYI All NY tickets have time stamp etc.. If no response, means no response. I did for several chargeback and I have no issues. Also certain credit cards do not need all these BS either.
And as advised, you should not be waiting. NY response to certain title tickets so depends on how you worded it you may NOT get a response. I had my documents witnessed by JP and its a definite win so far.
got all my chargebacks done and nippon cancelled all my orders and deleted my account xD. Such a pity as they were my go to store until now.
Nippon Yasan is offically gone.