I have 3 DC with ex, 8, 10 and 14.
Ex and I don't get on well. We separated 5 years ago yet continued to live in the same city, he moved 5 hours drive away 18 months ago to start a new family with his new GF. He went from having DC three nights week to two nights a month.
He pays maintenance but it's not much. I'm often overdrawn. I asked him to contribute to DC's school uniforms last week as they cost a bomb but he's refused. This started a snowballing of ill feeling.
It was his bday last week and his GF got him a photo album filled with photos of their child and her son and barely any of our DC. DC were very upset by this. I messaged him to say they were upset and it was a weird thing to do.
He told me to fuck off, called me mental and told me never to ask him for money again or contact him.
DC spent this weekend with him and say that his GF was calling me a 'fucking stupid bitch' and 'mental' very loudly in the next room so they could hear. They were really upset by this and I'm furious.
What should I do?