Replying to CALLOUT: GUMBA/CHAAA

Alright so here's the deal. Around a monthish ago, we (gumba and I) made a deal. My NS/4bi9 tall tee + a pair of goggles for his xxl 10/10 freeskier collab. I got his address, and I gave him mine, and I shipped out. I never got a message if he got it or not, so I messaged him asking if he has. He responded saying he had, and that he shipped out. That was on the 18th of December. It has three weeks, and he hasn't responded at all. And he's been online. I've given him multiple warnings and still no response. I checked his feedback and there were a few new posts of people claiming to have been scammed. I then checked his feedback on his account name in the pictures he sent me: Chaaa. It was all bad. I have his address, but I live in CO and he lives in IL. So if anyone knows him, maybe just talk to him or something. I either want my hoodie in the condition and size stated or my stuff back. I don't know how to put message history in here, if someone can tell me how, I will post it. But it seems really sketchy because of all the other feedback and the no responses. Thanks NS.