Hi, @calmrites, and welcome to our Netlify community site.
The DNS records of type “NETLIFY” (also “NETLIFYv6”) are system records and can only be deleted by our support team at this time. If these system records are deleted it will allow you to create other records for the same names as the system records which were deleted.
Regarding the changing the NS (name server) records, this can only be done where the domain is registered.
If you registered the domain using the Netlify web app, the registrar is Name.com and not Netlify (as we are a reseller and not a registrar ourselves).
If this is the case, we can transfer the domain to your direct control at
Name.com and you can then change the DNS servers (the NS records) for the domain with their service.
Again, we are happy to delete the system records if you like and/or to transfer this domain if you tell us to do so. If there are other questions, please let us know.