Firstly, boogles, calm down! You said "if anything was to happen to you or babber due to their neglegance".
While an appointment has been missed, there is no evidence of negligence. Missing an appointment is very unlikely to lead to something happening. And I am also rather unsure about what a "babber" is.
Anyway, nelly, as squizita says, the consultant appointments really depend on why you need to see them.
Because of a previous stillborn baby, I get fetal medicine scans at 8, 12, 16 and 20 with fetal echos at 18 and 23 weeks. Assuming all is well, I don't need to see the consultant for a proper appointment until a bit later on when the next onslaught of scans and appointments will be decided.
Getting PALS on the case might be the best way to sort things. Not being able to contact anyone to ask questions and sort this out is clearly not ideal. They have ways and means and need to know where systems are failing so that it can be improved.
Most of the MWs I know are massively overworked, working in understaffed wards and departments, and last time I was in hospital, I was positively encouraged to complain about delays as they get told by management that "well, the patients don't complain, it's just you" so nothing changes.