Would you be upset?

So less than a month after I gave birth to my son (my second child) my parents went to Thailand for a couple of months. I'm already annoyed at the timing but ok. Then they extend it for another 2 months. I'm getting more annoyed. Then mum messages me and cancels going on holiday with my family in April which has been booked since June because they might still be traveling. I feel so abandoned and disappointed. I messaged them and my brother (who I spoke to already and is on my side) about how upset I am about all this and get a complete non-answer basically see you when we get back. Like no. I do not want to see you. I kinda want to cut them off. Not just for this but it's the final straw. When they come and stay for a few days dad just stays in his room and gets annoyed my 3 year old doesn't like him much, he does nothing with her! Let's just say they weren't great parents to me, my brother and I have both worked through substance abuse issues. Has anyone else cut out toxic parents?