I had a friend that I met on a discord server. We started to play together on Rainbow Six Siege and after a while, he started trying to guess where I live. I thought he was just kidding around so I went on with it. About and hour later, he pulls up a screen shot of my ip and my state/city. Now he is teasing/harrasing me online making jokes about pinpointing where I live or exploiting it. My question is what should I do to prevent him from further obtaining information?