If you look on the Andy Murray thread in Off-Topic, you will see that Mikeysix (Page 3 or 4) posts that he received a PM from you and quotes it in full.
I also posted later that you had sent me one as well without quoting it (but it referred to me as being "born stupid")
If neither of these PMs came from you but some A.N. Other, I would look into what else this person has done to sully your good name.
I'm surprised you don't know about this as one of the Moderators was going to address the issue.