[Warning: superstitious] does anyone know a powerful baba or similar person in the city?

Hello, I am a 19m from kandivali and usually never believed in black magic even tho my grandma talked about it all the time, up until the death of my father who was young and died terribly. A relative (my grandmas sister) was sitting and doing gestures like tying a thread with her pinky finger and laughing hysterically like an anime villain. My dad did have history of seeing things which was diagnosed as schizophrenia but apparently shit was more than hallucinations after all. My grandfather is experiencing similar stuff, nightmares, etc you name it. He woke me up a couple nights back to a full fledged panic attack crying that he's sure my relative is at it again. I used to be plenty healthy myself but ever since my dad passed I've been sick and even if I recover, the moment I think of starting normal life like work, I fall very sick again and it's happening continuously. Please recommend an individual with strong spiritual prowess who can guide my family and help us out of this.