The reason Noory asked the same question again 'Did somebody throw acid in your face?' to Louise is that Noory in reality is a mean piece of shit human being, the question is clearly to ridicule and demean a sad old woman. Noory tries hard to present himself as a compassionate 'friend' to his motley assortment of regular callers like Louise and Cornelius but he is a phony, he looks down on them.
He does it regularly with Louise, even when Louise calls in to ask a question of a guest, totally unrelated to reincarnation Noory will advise the guest 'Louise you know is the reincarnation of Cleopatra the Queen of Egypt'. Guests are caught off guard when he does it. It's his passive aggressive way of demeaning the old woman, he's ridiculing her.