The Problems of Disbelievers in Heaven and Believers in Hell

What should God do to heaven-dwellers who disbelieve that he exists? What should God do to hell-dwellers who believe that he exists? Theists might give the following answers: (i) since heaven-dwellers see God, they cannot but believe that he exists; (ii) God sends disbelievers in heaven to hell and believers in hell to heaven; (iii) heaven-dwellers are so virtuous that they cannot but believe that God exists, and hell-dwellers are so vicious that they cannot but disbelieve that he exists. I argue that all of these answers are untenable.