Poltergeist Activity- Answerphone Message from Unknown Spirit

I awoke Friday Morning and casually and reviewed the telephone messages, on the Answer Machine of my Main Telephone. I listened and got to a second message which time was recorded on Thursday 24th at 0517. I left the House early to travel to work in London at 0500. It starts off as a normal phone call, and then there is rustling of what sounds like papers. There is then a raspy Male Voice, which is breathing softly, and there is a lot of '-White noise' and feedback and ends in a Voice that sounds very harsh and Guttaral, but whispery, almost as an alien would sound. I believed it was an alien until my farther reminded me that it was likely that it was from the Ghost, that I had first had in the 'Office Poltergeist' Story on this weblog. I have a copy of the message which I am currently reviewing. I will keep posted if I have any more incidents.