Should I say I’m done and break up and stop contacting him completely to show I’m done or to see if he cares and regret for what he did?

I needed my boyfriend to be there as I’m going through hard time in my life, he refused and he said I’m up to something and being dramatic when I asked him for him. It’s a long story. I’m too heartbroken he called me but didn’t answer. Should I go ghost? I dont want to call him. It showed his true colors when I’m going through hard time and he’s not there for me. What should I do?
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