I was in the same boat as you at one point. Rest assured, you WILL receive your N Points. NTT can be busy with all aspects of the game, not just orders. It may take some time, but they will deliver your points soon. It took them roughly 3-4 days to deliver my N Points if that makes you feel better!
Send in a ticket with a transaction number of some sort. Your probably got it in a email after you purchased. Get that transaction number send it in support as a "ticket" as they call it. Do that and if you have no responses or no npoints. Post the ticket number here and maybe someone will see it faster. That's all you can do right now besides wait. I hope this helps!