Poltergeist phenomena is usually linked to an "agent." Can manipulate objects either moving, throwing or teleporting them. A noisy, sometimes destructive force that in extreme cases could physically attack.
If you'd prefer to talk about it, Call Ghostwatch UK report line on 020 3883 2029 leave a voicemail explaining in your own words your real paranormal experience, what happened, where and when. We'd love to hear about it and your story may be featured on Ghostwatch.