"Impossible to get in contact with a midwife"

This is my first pregnancy. the first appointment everyone was very nice, explained me everything etc etc and said to call a midwife anytime if I need more info, if I was worried abotu something.

I come last week for some thyroid blood test and I would like to get my results (even if they're OK).

I tried to call several times the midwife to ask for information but no one answer the phone, there's no option to leave a message, to send an email, to talk with someone basically.

I understand London a busy city, but what if I have an emergency? Then don't say/ write everywhere 'IF YOU DONT' FEEL WELL CALL YOUR MIDWIFE' cause she'll never answer the phone...