"My mother's delayed diagnosis problems with Seadoc "

My mum has been feeling unwell for a while and has lost a lot of weight in a very short space of time. Feeling much worse on Saturday, she phoned "Seadoc" (the local GP out-of-hours service) at the William Harvey Hospital (Ashford, Kent). She was seen by a doctor, who said she was o.k & they couldn't say what was wrong with her. She was sent home with a prescription for some medication, which 2 pharmacies said was obsolete. Her partner waited for nearly an hour for Seadoc to get back to him with an up to date alternative, which they never did. My Mum was then phoned by a different doctor from Seadoc, who asked her to come back to hospital, although she did not really feel up to another journey, only for her to be told exactly the same things that the first doctor had said! That in itself was bad enough, especially as some of the symptoms my Mum had explained to them should have set "alarm bells" off. This was Saturday morning. In the early hours of Monday morning, she phoned for an ambulance because she felt so ill & later on that same day she was transferred to Canterbury...with acute leukaemia! Where she started immediate therapy. How can Seadoc have missed this? Especially after what they had been told by my Mum, barely 2 days before. I feel angry, upset & totally appalled, & Mum feels that she was not treated properly at Seadoc, but is relieved that a diagnosis was made so quickly by the hospital team on Monday.