Cancer patient struggling to pay energy costs

A man who was previously working full-time has had to give up work following a diagnosis of cancer.  He has had to give up working as following surgery and complications he is no longer able to work.  His wife has also had to give up her full-time job to care for her husband.  They moved for a while to live with their daughter and her 4 children, but his surgery and overcrowding meant they had to move to alternative accommodation.  They are currently existing on statutory sick pay alone, and having to pay from that their rent and council tax, leaving them with very little a month for food and bills.  We offered to send them £75 go towards topping up their energy meters and getting some food in.