You should go about this like a professional:
0) Make sure you did not sign your rights away. Read any documents you signed in that regard carefully.
1st) Contact NcZam and tell them to remove your intellectual property within 3 business days. Settling this like adults is always best. They got caught any can get away with a slap on the wrist. Realistically, just stopping their bullshit is the best outcome for them.
(Maybe Nikrean set them up to this. Sometimes, perceived offenders were set up by others and Nikrean is... "not well".)
2nd) If they don't react or procrastinate, contact the hoster. They probably have a DMCA-link for those cases.
3rd) If the music mysteriously disappears after having been removed by the hoster, that means a legal battle. To the best of my knowledge, the loser pays both lawyers & other legal costs. But in the US, they can draw out the payment for years, so prepare to pay your lawyer "for now".
ThisIsBigboi00
It's also worth mentioning that NcZam has been in several violations of the Hailfire TOS.