In Islam, it is clearly forbidden to do Kala Jadoo, Jhar phoonk and similar black magic stuff.
In Pakistan, Bangladesh, India, people engage in these activities and it is written on walls to get marriage by kala jadu or to get success in life by doing this.
There have been multiple instances of the same and people have witnessed the consequences. However, you can save yourself by reading Quran on daily basis.
What the Urdu Islamic book Kala jadoo ka ilaj includes:
Quranic Ayats to save you from Kala jadu.
Ahadith for Kala jadu ka ilaj and Taweez ganday
Islamic instances of Kala Jaduu
Read this urdu Islamic book in offline or online mode.
The urdu Islamic book is available for free by the publishers for the public.
Remember: Kala Jadu is Shirk and haram. Those who do it are not from muslims.
If you or anyone you know is involved in such practice please stop them.