Razer Naga Trinity Mouse RMA

Hello, A bit ago I had a RMA issue with Razer, and through great and wonderful customer support they got me taken care of fast and with out problem. That was a few months ago, The case was resolved and closed out. Now fast forward today, I got a package in the mail from Razer that contained another mouse. They had already replaced and taken care of my mouse this is a whole other second one, I did not put a ticket for or anything it just randomly showed up. what do I do with this?