A large part of the reason why the NHS is failing is because there are too many patients and not enough clinical staff. This isn't the fault of the midwife who would dearly love to spend more time making you feel you were getting a good service. Do you really think they wake up everyday thinking "I wonder how many of my patients I can give a substandard service to today". They don't call you back because they're snowed under. I expect they start early, go home late, work through their lunch and with the added pressure that they are responsible for the health of hundreds of pregnant mums and their babies. Like viva said, saving lives is actually a part of their job and surely you can understand this has to take priority over calling someone back about whether or not their UTI results have arrived. I agree it's not great, but the first people who desperately want the system to change is the midwives themselves. I think they're doing the best job they can under the circumstances.
They're referral rate will be increasing with the gradual increase in population, but numbers of midwives are being cut. This isn't their fault. Slagging them off really won't do anything but encourage them to pack it in, work privately or just get a different job entirely where you don't have to slog your heart out, bringing babies safely into the world day in day out but with absolutely no thanks other than an ear bashing from an angry patient, a measley 1% pay rise (if they're lucky) and bad press all over the papers.
(In fact in my area, I've never felt let down or kept waiting so I guess I'm lucky, perhaps we're better funded in this area)
So in my mind, if you don't respect the service, think it's a waste of time and could do the job better yourself, please free up the midwives time for those who do feel they need it and respect it for what it is: a completely free service which is adequate most of the time but amazing when it needs to be.
You could also stand a fighting chance of making a real difference and vote for a government who proposes to keep and find vital NHS services.