There aren't any ensures that each individual working with these services will get their sought after success. Astrological outcomes depend upon many things, so outcomes may well vary from person to person. —Vasikaraṇa-prayoga and various chapters from the Kalpacintāmaṇi (often called Kalpasāgara) deal with sorcery and planning of patent medicines. https://maps.app.goo.gl/doVCpJs2vRygbeMs8