How does my own mom and grandma not care about how my children feel? My mom and grandma just left…

How does my own mom and grandma not care about how my children feel? My mom and grandma just left and my son wont stop crying cuz he didnt want them to leave. Im crying cuz my family hurt my children. Im so pissed that they did this. Why come all this way for a visit and then leave 5 days later when they where suppose to stay until the 7th of next month. Is it wrong that i feel like I want to just never talk to them again? I no i dont want them to come back. The sad thing is my 1 year old has no clue whats goin on. Feeling so helpless.