Should devotees consult astrologers to ward off negative influences?

From: Devdatt

My friend and I had Kal-sarpa yoga according to one astrologer. My friend is not a devotee and hence he did puja. Miraculously he got a job and some of his financial problems were taken care of. My question is what aspiring devotee should do if some of these things are recommended for him. This enquiry may seemed foolish however there are increasing number of Sadhakas are falliing pray to such processes and they claim that as they are not on level of Prahlad Maharaj or Prabhupada and hence they have to do it and they say that we need to do this to remove obstacles on the path of Bhakti and to become peaceful. Kindly enlighten us. Your answer will be torchlight for us to follow.