Struggling to deal with ex

[Mishmash86]

Hi guys,
I'm new here so please bare with me...
I'm in a bit of an issue so the short story..
Me and my ex broke up over 2 years ago and it's had its ups and downs. I have 3 children (all he's) 4yr,9yr and 12yrs
Initially I was making effort to get the kids to call him but then it died down a little as I became more and more busy with work and obvious parenting. So we began arguing. I then advised maybe getting phone to call them on so it removed me from the equation (as he started accusing me of purposely not calling or answering phone calls in the evening when this really was not the case)
My eldest daughter and my son now have gadgets that their dad calls them on. This week he's not called them and has today called me
I quote... 'hi how are you, can I ask you a question? Do you think its right thag you don't get the kids to call me?' my response to be fair was fairly cold as I'm so fed up of him putting he's own irresponsible behaviours on me! So my response was 'well the entire reason you gave them these gadgets was for YOU to make more effort instead of expecting me to do EVERYTHING (washing, cleaning, cooking, school runs baring in mind he hasn't paid anything towards the kids for the past 3 and a half years) so no I'm not going to tell the kids to call you. "
My issue is am I actually crazy in thinking it's up to him to call the kids especially based on their ages. If I had all 3 toddlers I would understand but the fact they have ipads and phones surely means if he wants to speak to them he should call them and not expect the child's hand before the adults?
Please someone help. Me in telling me I'm crazy or I should stick with my mindset

Thanks in advance x

No your right he specifically bought those devices for him to be able to call them so he should call them your not stopping him seriously he made the effort to call you to blame you why didn't he just call his kids

Thanks so much for your reply. This is exactly what I was thinking. He said to me on the phone all that I should ask others to see if I was in the wrong so thought I'd reach out on here. Still in the back of my mind feel like I am doing him wrong by not telling the kids to call him but you've helped me see maybe I'm not crazy x

You're not in the wrong at all! Does he realise phones work both ways? He could have spent the time calling them instead of you. No, stick to what you're saying. You're not responsible for telling the kids to call him, how are you even meant to know when he's available?

This sounds very familiar