Wait until they call up a real demon like the witch with old Saul. Didn’t end well
With all those occult practices, they ARE calling up real demons.
King Saul consulted a medium to call up or down Samuel (A prophet not a demon). The medium screamed when Samuel appeared, and some speculate her powers never worked before. Samuel rebuked Saul for consulting a medium. And apparently Samuel's life was cut short(not immediately) and not consulting the Lord and consulting a medium was included in the reasons why.