Recently things have been getting a little wierd around by my house in Swansea. Iv'e had friends over, chilled with the girlfriend and been on my own in my house. A person or persons keep knocking on all of the windows in at my home. I have attempted on numerous occasions to catch them, but always seem to fast for me and i'm a pretty fast guy. Iv'e rang the police, who im sure think iv'e had one to many or im on drugs, but im not the only one. My friends have actually heard these people in the act. Thy've tried chasing but they get away very quickly. They are just a nuisance more than anything. One thing i know thier not kids messing about. The person i saw looked about 6.7 inches around about that. I'm 6.3, but that's just a rough estimation.