Your pushing it!!

Not everyone understand and cares to understand how busy an individual can be. I am a mother of 2 teenagers and an 18 month, I have a full time job, physically training for a mandatory fitness test, school and aside from that chores to take care off and sometimes having breakdowns on how overwhelmed i can be. The least my friends and family can do is UNDERSTAND. But what about those people who despite what you tell them you are going through, keep pushing to the issue and expect you to go out of your way for them?