In my handbook it says *my time with my family is important to me, so please respect my hours*. Typically after reading that, and seeing my late fees it sets them straight. And I do send out my Handbook BEFORE the interview over email to make sure they agree with policies etc.
I know how frustrating it is though and I've been there too where I do lots of pre screening and somehow during the interview it comes up that they want longer hours...really frustrating but I was also talking to some friends who are currently interviewing providers and they said that every single time they have talked over the phone and asked for longer hours the caregiver has said yes so it sounds like there may be lots of caregivers out there who ARE flexible despite their advertised hours and it gives the wrong impression and parents assume we are ALL flexible.