Can you send someone to Collections for unpaid invoices?

[Kass12]

I have a unpaid invoice. Can you send someone to collections? And how do you do it? 

[jjgard]

I can imagine it's frustrating to have an unpaid invoice.  Sending an unpaid invoice to collections can be done, but it's not something you can do through Square.  I'd try googling collection agencies near you and see what you can find.