Two things cause serious misfortune:
Sins which many neglect and hang it on the black magic. The family needs to review the Salaat being prayed on time, if people are hurt then apologies must be executed, and after clearing the issues between Allah swt and the servant no black magic works. People become under total protection of Almighty swt whose power is far greater than the satanic powers and the black magic. This is based on the quranic directions and the teachings of Ahlul Bayt AS.
My family has been having a lot of problems for the last decade. We belong to a family where people don't pay much attention to superstitions and black magic kind of stuff however when our circumstances kept getting worse, we were told by many people that our family is under black magic spell. Kindly help me as what can i do about it and how can we get rid of it?
Sorry to hear about your family situation. Allah is Great and He will make it easy for you and your family.
“ dua is the weapon of a believer”
You need dua to be able to overcome the challenge insha Allah.
I would recommend the recitation of the following:
1. Dua jawshan sageer and kabir
2. Chapter Yasin as much as you can
3. Dua tawassul and Ziyarat Ashura