Yes you can if you are an administrator!
Log into NetSocial and make sure you are viewing as Company.
Select User Management from the left side menu. Find the user you would like to delete and select the delete icon.
You will receive confirmation that the user was successfully deleted.
Our Success team can assist with completely deleting users from your NetSocial account. Please reach out to firstname.lastname@example.org if you'd like assistance with this.