Sir/Madam, i met my ex boyfriend in college, he proposed me & even i liked his behaviour i accepted

Sir/Madam, i met my ex boyfriend in college, he proposed me & even i liked his behaviour i accepted the his proposal...we started dating & after 3months of relation my first mistake was i got physical with him n i got pregnant..but we decided to get abortion so we did..without telling our parents & with the help of few close frnds..n than every thing was going normal..later my family got to know abt our relationship(not about abortion) ..n my Father is very strict..my family didn't likes our relationship..so my parents used to shout at me & sometimes also beat me...so here I did my second mistake that as i got frustrated so I run away with him we stay is his aunt home for 1 week than again our parents spoken with us they said they will do our marriage so we both came to our our home...so I was living with my mom dad ..later we were in touch by chatting calling..but not met bcoz i was leaving in my native...later on he got so toxic, his behaviour changed, he used give me abusive words, u used to be very dominant, his anger tantrums,he didn't wanted me talk to any of my frnds & he also started theartning me abt our private photos, n abortion reports..so I decided to end the relationship bcoz his Psycho behaviour..so told him about the prblms n u said let's we just end here..but then he called my father told about abortion...my dad was so hurt...now I feel so guilt that I hurt my parents bcoz of this guy...n i also said about all the prblms he was giving to me .so my dad said to end the relationship...so now I denied but he's still contact me gives me abusive words & theartning me ..i also have proofs like message n call records...he also given death thearts to me n my family .he said he will harm us know if i don't marry him ....plz tell me wht to do I'm so confused wht to do where to complaint what should be my next step.