from the context you don't even care to ask if he was intentionally trying to impersonate you, so how do you know?
I highly doubt he is trying impersonate you, it really isn't a huge deal considering your names are a bit different.
just overreacting, next time talk with the person first instead of making an assumption that he is.
I don't know who it is, so it means nothing to me.
are you loving kidding me, if it means nothing then why did you create this i the first place?