Name changed for this and posted here for traffic as I'm just looking for advice rather than an AIBU... I apologise in advance that this may be long.
For context, I have a 11mo DC with my ex. I left him when I found out I was pregnant at around 4ish weeks gone and have not seen him in person since, neither has DC. Throughout the relationship ex was emotionally abusive, manipulative, lied about anything and everything and towards the end i found out he had big issues with drugs, alcohol and gambling. He is not on the BC and I have no wish to look at financial support or anything else from him. Since I left him I have had sporadic but lengthy strings of contact from him (mainly emails) ranging from love bombing type messages begging for me to take him back to threatening ones saying he would rather DC be dead than with me, etc. These will go on for days then stop for a month or 2 and start up again. His family also have threatened and approached me in the street trying to intimidate me numerous times. All of which were reported to police and "logged". I've blocked their numbers, emails, social media, everything but there always seems to be a new one created that pops up again at some point.
In the early stages I contacted Social services for support with this, who did an assessment and said they would not recommend any contact with DC unless this was supervised in a contact centre at his cost. He refused this unless I was allowed to be present. (Ss are now no longer involved with this). Everything ex has contacted me I've either ignored or reiterated the recommended path ss said he needs to take.
Tonight, out of the blue, I have had a string of messages and friend requests on all my social media, emails, etc from a cousin of his claiming to be "checking me and DC were okay". I ignored it but they kept resending so I was being pinged constantly with notifications. I eventually snapped and sent a reply saying i wasn't stupid and in 18 months no one has ever reached out from his side to check how we were or even ask about DC so I fully expect ex has either borrowed his account or asked him to contact me. (For 1. My usernames are vague and can only be linked to me if you are specifically told what name they are under, and 2. I do not believe in this being a coincidence as they seemed desperate for me to see their notifications) and if I get 1 more person, ex included, contacting or approaching me for him again then I will call the police, then I blocked them. Now the emails have started again...
Is this grounds for harassment? What can I do here? I'm really sick of living in constant fight or flight mode with this family. I sometimes regret even having DC as I will forever be stuck in this awful torture. :( please help!