If You've Been Banned, How Do U Get Unbanned?

Unbanning someone is totally Blurtit's decision.
Usually, When someone is banned from Blurtit, they are issued warnings before that. And, if still someone involves in forbidden act, then they are banned.
Now, getting that member unbanned depends on the decision of Blurtit. You can use the Contact option and can ask them to allow you to be part of this community. Had your offence be very serious, it would be very difficult for you to be part of this community.