I sold a Sonos Play:1 on ebay however the buyer said it was dented and doesnt work and returned a broken one. Now their is no way this is the same unit but I sent him. I need to prove to ebay the serial number of the returned one isnt the same as what I sent.
Now I didnt record the serial number of the unit I sent, is their a way I can find this? Via my sonos app or account or their support or other?
Any other suggestions of what I can do?