Lisa,
I am with you...and the others. Do not put up with it. I switched organizations (hospice) after volunteering for a decade. The volunteer coordinator at the state level was getting on my nerves with her directives.
I heard later, from my volunteer coordinator at the local level that the state person felt, "These volunteers need to treat this as a job."
Uh, N.O. But, that did explain how the state person felt comfortable with the things she had been asking/requiring.
The organization I have been with the last couple years seems to actually value their volunteers. Life comes first, do what you can and we value it so much...over and over and over again they tell us that. Yes, that feels much, much more like volunteering as I expected it to be.