I've been having problems with my ex partner for a couple of weeks. But if background there was a lot of dv that went on in our relationship we haven't been together for a year. He sees the children on weekends and I am solely responsible for pick up and drop off. Since breaking up me and the children have moved to an address he doesn't know. The children have also moved school in the new school year.
Today he called me to say he was on his way to the school by taxi as he wanted to pick them up and promised he would. I rushed my way to the school to get there first however they had opened the gates early as I was coming round the playground saw he had already collected youngest.
I don't really know how to approach, as new school we're not aware of the situation. However we're 3 months into school and he's never picked them up nor is he on any emergency contact/authorised person to pick up the children. Where do I stand and what can I do?