“I don’t know what I did to make you treat me so unfairly and so disrespectfully,” while possibly accurate, is probably not the best line of approach when someone you love has treated you hurtfully.
If you have degenerative arthritis, say, and did not qualify, until a few weeks ago, for palliative injections that will allow you to exercise for six months without pain while building up surrounding muscle, why is that really anyone’s concern besides yours? Why would you expect automatic acknowledgment of your physical limitations and the empathy that follows from considering a loved one’s disability?
Say you feel wrongly accused of a flaw you try not to have, say in addition to an unreasonable expectation of sympathy, there’s the perception of your habitual comfort inconveniencing everyone around you. You like to sleep all day, so nobody can even be on the road for a vacation workout by a reasonable 10 a.m.
All these feelings, after someone shows you an implacable face, must be put to the side as you figure out the best way to restore trust and mutuality. It may take more patience than you have, particularly when you feel hurt, but that’s a separate question.
The real question is how to convey to them how hurt they would feel, placed in the unfair situation they’ve placed you in. That is not the work of a few minutes or a few hours, of simply choosing the right words. It requires a supremely patient telling of the right story, framed sympathetically, to keep everyone calm and help them understand.
It may take more patience than you feel you have. It becomes easy to think up past wrongs echoing the latest and be hurt by the confirmation of callousness, but making this list carries the risk of making you sound petty and prosecutorial. Best to focus on understanding, clarity and directness, toward a more loving future.
Otherwise, speaking out of pain, you are much more likely to do harm than to say anything that will contribute to healing or empathy.
Try writing the situation out first, it may help you grasp things better, to be more clear and better able to stay out of the many deadly traps hurt will steer you towards.
Best of luck, there is no harder work I know than remaining mild when you feel deeply hurt. It is worth the price to master this supremely difficult skill. In the meantime, be very judicious in what you say while still smarting.