I understand you have an issue with deleting your nameservers. You will need to verify that no other domains are using your nameservers. Once you have changed the nameservers on any domains that are still using your custom nameservers you should be able to delete them successfully.
Please let us know if we can assist you in any other way.
Sincerely,
Micah G.
Online Support Team
ga ada satupun domain yg pake itu ns tp masih tetep ga bisa dihapus