How do you unblock number what you thought was a spam text message?

KisaraKiba,

It isn't possible to reverse the action. There's additional information on reporting messages here: Block phone numbers, contacts, and emails on your iPhone, iPad, or iPod touch.

Take care.

Hi there KisaraKiba,

Welcome to the Apple Support Communities. It appears that you'd like to unblock a phone number that isn't on your blocked list, so we'd like to see how we can help. What steps were used to block the number? If you went through your carrier, the best step would be to contact them for help unblocking it.

Reply to this message if you need more help.

Cheers!