I need some advice before I go nuts, my exdp Dcs dad hasn't seen our kids properly since August last year, there is a whole back story but the long and short of it is, it kicked off a few months ago between myself and his gf, as she kept stalking my social media, calling my phone on private and calling me every name under the sun and hacking into private information about my kids. So at the time he chose his gf over the kids and didn't even try to contact them for over 7 weeks, when he did I told him that he can go away and leave us all alone as were better off without him, he's a compulsive liar and a textbook narc.
He saw them for all of 30 mins on xmas day as she was calling and moaning that he was I at my house and again hasn't seen or spoken to them since.
He is now calling asking me for overnight contact with them, but I have point blank refused as I've since found out that both him and his gf are taking drugs daily and that she is a habitual drunk driver, they live together 3 hours away from me and the ex doesn't drive so has no other mode of transport to pick up our kids and he doesn't seem to understand why I wont allow them to get in a car or be around either of them, as they're both so angry and violent towards each other, he thinks I'm wrong to stop contact and is trying to make out im just jealous.
For the past week all I've had is abusive messages, so much so that I've had to block him as it's getting too much for me. I don't know what to do anymore, he doesn't listen to a word I say and is just so ignorant that it really is doing my head in.
Any advice and where I can go to resolve this issue?