hi, im having dns problems, i want my website to go to my name servers and for some reason its going to the old server? can you help me?

example domain name: domain.com

OLD NAMESREVERS:
NS1.OLD.COM
NS2.OLD.COM

NEW NAMESERVERS:
NS1.NEW.COM
NS2.NEW.COM

so basically i want all my traffic to go from OLD.COM to NEW.COM servers..