That's very cool! Keep it up! Hail Satan

When summoning a specific Demon, do we only summon them once, or do we keep summoning until the desired goal is completed? I ask so I don't insult them. Hail Satan!

Hello, I've been dedicated since November 2012. There have been 2 ongoing experiences that I cannot answer. Maybe someone here can assist. First - I can no longer remember my dreams, Secondly - with my eyes closed I see flashes of light. Any ideas?