i need a digitial forensic examiner or investigator

hi there, i suspect that someone who has been harrassing me has hacked (or hired someone to hack) my facebook account. they also added me on snapchat under similar but different account names. it has legal implications because they have a stay-away order at our highschool. i am also getting texts from united states conservative groups asking for my support, that i did not sign up for. can you help me figure out who did this?

thank you!