Boyfriend ended things through a text message?

My boyfriend ended things with me through a text message then when I tried calling him, he said he will call me tomorrow I’m going to sleep in which he never did call me the next day. Just 2 days before he was telling me he misses and can’t wait to see me. All the while my mum was about to have cancer removal surgery just a few days later and he knew I was worried about my mum and he still ends up being so cruel to me. I’m really struggling with this and I just feel so hurt. How do I get through this?