Everything you are discussing is based on a specific religious belief.
In terms of summoning, are you trying to summon a demon or the devil?
Not everyone believes in the existence of a soul and it has never been proven that we or anything else has one. We don't even know why another being would want our soul, what would they do with it anyway beyond what is discussed in some religious teachings.
Also burning in hell is a Christian belief. Many people on this site do not follow Christian tradition and don't believe in the existence of a heaven or hell. What would what happen to you after summoning a being that may or may not exist and trying to sell a soul that may or may not exist is complete speculation and would depends on your own personal belief system.