People create their own hell by their own physical desires. Some people flee the light of God after death for fear their hidden desires and thoughts will be revealed. Physical desires can be carried over into the afterlife but physical desires cannot be satisfied there. This can create a hellish condition for those who have them. One level of hell exists right here on earth where an earthly desire is craved but cannot be satisfied.
Some people linger around the living after death, usually to try to satisfy a physical desire.
There is no being who can be everywhere at once, who has powers to torment and tempt everyone at the same time. God would not permit such a being to exist. There is no devil to blame our own transgressions on. These earth-bound souls tune in on us through our low vibrations of hate, fear and greed. They can be tuned out with unselfish love, or if necessary be chased away by a stronger soul such as that of Christ.