r/HowToHack

Okay so idk if this is the right subredit for this question but heres the thing , someone keeps calling me at the middle of the night and it says private number ive tried calling #57,#67,*57,*67 but nothing seems to work , is there any app that i can use to see whose there or what , also they know in what city i live in even tho i moved a couple months ago , and they know i have a sister
Im quiet scared. Also my bf also got a few calls from a number he doesnt recognize and when he typed the number into the whatsapp he found a guy and that guy told him that 2 guys from my city where i live gave him a number from my bf but not mine , also a couple years ago the same thing happend but the guys were from my home town