Hello kjomalle,
Thank you for using Apple Support Communities.
We understand that you blocked someone on your iPhone and have since unblocked them but are still unable to call or text each other. We see that you have unblocked them on Messages and Phone, but would recommend reviewing the steps in the following support article to make sure you haven't missed something:
Block phone numbers, contacts, and emails on your iPhone, iPad, or iPod touch - Apple Support
Specifically in the "Manage your blocked phone numbers, contacts, and emails" section.
Once you have done that, then take a look at this article for additional things to take a look at:
If you can't send or receive messages on your iPhone, iPad, or iPod touch - Apple Support
Best regards.