Unfortunately I am miscarrying at the moment and today have passed some worrying clots. After failing to get through to the midwives or the nurse at our doctors, I called NHS Direct.
I started to give my details and a graphic explanation of what had happened with regard to the size and colour of the clots when a squeaky little voice at the end of the line said 'er, did you mean to call First Direct?'. 

I am so embarrassed - I always get those two phone numbers mixed up and had even gone all the way through their security questions on auto-pilot!