[mothered]

Now they are asking me to destroy the mouse and sent 3 photos from different angles with the SN visible

Use the good old "corrupted file" method, whereby you do just that (corrupt It), and assure them that It's working fine on your end. No doubt, they'll request It again, so send It In a different file format- just to give the Impression as though you're making an effort to resolve the matter. Keep doing It until they cave In.