My dad is spending anything up to £400 per week on top of his £600 a week rent plus other bills. He does not have enough pension to cover this and no matter how much I tell him he still does this and just says he knows what he is doing. I live in Cyprus so I am very concerned that he is going to get into debt.
Carol
If he is "in his right mind" and just chooses to be irresponsible, there is little you can do but hope he comes to his senses before the consequences are disasterous.
I think Carol is on the right track in suggesting that someone of his own generation might get through to him better than you can.
Good luck to you!