Hello @General Knot,

Thanks so much for sharing this with our Community.

It will depend on the list! Klaviyo has a set of default lists and segments that you will not be able to permanently delete. If the list you are attempting to delete is not one of these default lists, please do let us know.

Thank you, dov.derin 

I deleted the list two more times and they stayed deleted. The list were just self-made- not default. Not sure what the issue was but it seems corrected. Thank you for your help.

Regards