Sorry to hear of your distress. In a relationship breakdown emotions are hard to control. It is a long process. Wherever possible you have to be the bigger person, the kindest, the forgiver - even when it's hard. Gentle honesty and kindness can help to dismantle hostilities but it will take time. Be as kind to your ex as possible, without giving them false hope of reconciliation. The legal alternatives can be painfully expensive but necessary if best efforts at sensible communication breaks down.
I have been amicable and polite. and now I have been cut off from all communication by my ex this week. My daughter was asking my ex if she could to speak to dad over the phone. Now my ex have put a stop to all means of communication with my youngest son and youngest daughter. my ex told my oldest daughter who is 17. that she had blocked me on her phone. And if the younger children want to speak with me they can use my 17 year daughters phone. all I’ve wanted was to limit the distress and upset that my youngest children are going through by keeping communication with them over the phone when they were were upset and or wanted to talk me over the phone. my oldest daughter is not alway home. And I can’t knock on the door as I will be greeted with hostility. is there anyone I can speak to over the phone that can offer any support.
I feel your frustration. I have a very hostile ex-husband causing me grief for the last 8 years! I can only offer my support as fellow alienated parent. my ex is malicious and has even managed to hoodwink CAFCASS. boo hiss.
if you have not done so already, speak to citizens advice who will get a legal advisor to help you sort out next steps. it does take a bit of time, all services are very much in demand, even the courts are overloaded.