called on private, unlisted #; long pause; after my third 'hello' there was a change in the phone's tone as if someone was on the line; disconnected; *69 the caller (there was no info on caller ID and looking the number up in reverse directory indicated that it was a land line from Pottstown, PA; I could find out who was calling if I paid $14.95 (some 'free reverse directory' service!); I have repeatedly called 610-718-8504 only to get a busy signal each time; I intend to keep calling