Welcome to the forum 
The “Hat Man”? Not great - banish and cleanse and set up proper wards, “shadow people” are useless bunch of wannabes and need to not be helping themselves to a free lunch at your expense, they offer nothing and are a waste of your time.
Worse they can interrupt connections you try to make - like to Namaah - and pretend to be the entity you wanted to talk to while never making good on promises or agreements - and that totally undermines your goals, your confidence in your magick and your relationships with worthwhile entities. Get rid of them before you try to summon or invoke.
See the spiritual hygiene tutorials for more info and basic techniques, then you want to get into developing your astral senses and here’s a bunch on avoiding impostors and parasites.