Why Doesn't It Happen More Often?

Why isn't communication from the souls of purgatory a typical thing? Couldn't or shouldn't souls be more willing to let us know they want our prayers? Any idea why the livingstones would be chosen in particular, i think the livingstones were chosen in part ar because they didn't heed the traveller's request to get a priest to hear his dying confession. Back in the middle ages, if you had ghostly phenomena going on, one of the first things you would think is, oh, maybe it's a soul in purgatory who needs prayer. Also, other people have dreams and stuff of loved ones all the time, or sensing the presence of a loved one and