Hi
I can't really give any advise as I don't know what 'treatments' there are in your country, I live in the UK & have reacently lost my 20 year old son to cancer after battling for 4+ years. . . if I had money ...& I was you I would take my father to 1 of the cancer clinics in the USA...you need to research your fathers type of cancer, clinics that treat it & their success rates....its a long long way to go if the results are not favourable
take care