Help!: Can I delete a default teamspace and how?

I created a teamspace just to try out the feature and see what it's all about. Realised I didn't need it and because of it I have reached the notion workspace limit, and i have to upgrade and pay to make any more new pages. I've tried to delete the space but it tells me i can't because it's my only teamspace or something? I can neither leave, nor archive or delete it. What do I do?