Happens to me all the time it seems....
And some of the stuff they are asking me to do (and I go ahead and do it) one or more of my doctors wouldn't be too happy about (that's putting it nicely)
BUT as soon as I need some sort of help, I don't get it, or at least not when I really needed it...That gets soooooooo ANNOYING! ]

me too , the amount of times i am asked to help write a letter or proof read things is phenominal, yet I am severely dyslexic so can't read or spell! ( MY COMPUTER TYPES WHAT I SAY AND READS WHAT I HIGHLIGHT ) the other day i was asked to help look after a friends dog for a week, she said it is ok he will wake you up if he needs a pee in the night....i can't even turn over in my sleep and spasm for over an hour on waking up let alone get up bump down unadapted stairs into my wheelchair to let a dog out! she was quite offended when i refused to help!...her mum lives a few doors away from me, so why did she not ask her....because she didn't want her 50 year old ablebodied mum getting up in the night!

[Perhaps if we all complained at the same time things might change?
Some how I doubt it...