Taking responsibility

At what point does the responsibility fall onto the client?  There are calls from people wanting to know if we get notifications on dangerous traveling conditions in contries even though they didn't book anything with us.  Do you not watch the news people?  If you can't keep yourself educated on the country you are visiting then maybe you shouldn't be traveling there.  Another example would be:  Client's have gotten numerous invoices and now have documents and it is now only 2 days away from travel just to call and say "Oh I just saw that you need my legal name?"  YES!!!!! I need your legal name I told you that the first time!  Now let me work miracles and see if that tour company will change everything for you!  And no it isn't my fault.