I am unsure where to go for help with this so anything you can suggest would help.  My mother who is in her 80s has been diagnosed with cancer.  My father said at the diagnosis he would do "everything" to which he meant what he has done, is done so grudingly.

I have a disability and live with them and now see that although this has gone on for decades I simply cant watch this cruelty any longer.  He will take her to radiotherapy but leave it till the last minute so shes almost late, which he complains about.  He always had a three course meal every night before the cancer(which he always had a complaint about every night), now he complains he wants a home cooked meal.  

I am trying to keep the house clean, washing, getting christmas done, doing PEG feeding every day for mother, yet I am selfish as I can only get out once a week to get food for myself and dont for him(he is so picky he wouldnt eat anything I bought as he did not when my mother bought either).  When I ask when hes late at tea, I am told how does it affect me, you dont make my supper (because I physically cant).

He shouted at my mother when I wasnt here and her PEG machine wasnt working, despite me explaining to him.  He calls her stupid when he starts a story in the middle and she doesnt understand.  When I said we need to get social services involved he said he would think about it when I said I was struggling with the cleaning, my health and caring for my mother.

She is in her last week in radiotherapy and nurses are telling her not to get stressed but this is all this house is.  

What can I do to help make this situation better as I cant stand back and let either of this live this life any more.