Problem:

I need to remove invites that are in the Pending section of my organization's Members page. These users have been pending for a while and have not accepted the invitation.

Background:

As an Admin you do have the ability to withdraw invitations yourself right from your organization's dashboard.

Solution: 

Withdrawing Pending Invitations:

1. Log into DataCamp
2. Navigate to your group by clicking on Organizations in the left panel of DataCamp's landing page
3. Click on Members located on the left-hand side of the organization dashboard
4. Click Pending Invites (#)
5. Click on the checkbox next to the email address/invite you wish to withdraw
6. Once you highlight the checkbox, the option to Withdraw Invite will become enabled
7. Click on Withdraw Invite and you're all set!