Anyone have any experience with this situation?

An ISO was sent a commission by accident that was supposed to be sent to another ISO and the ISO will not return it? At first the ISO was communicating, then now a ghost. Wasn't a tremendously large amount, but to end a relationship over this does not make sense. Have called, texted, emailed several times. No response now.

Any experience with this ISO:
ISO information:
Chase Evans
Advance America - Merchant Lenders
Advance America, LLC.
C. 1-754-666-0350
F. 1-888-813-2673
Emmanuel Carnero - Owner
Address: 150 SE 2ND AVE MIAMI, FL 33131

Just looking for the return of the commission here. Any information here would be appreciative. Thank you.