Hi bootsmum
Sorry to hear about your problems.
I wouldn't stop taking the tablets as you won't come to any harm by continuing until 4th Sept even if you don't manage to speak to your GP - and at least your flushes are being controlled - but I agree with Sunnydays. You should be able to discuss a problem like this with a doc by phone without having to visit - at least initially.
I am still a bit unclear as to where you are in menopause. Did you have 2 years completely without periods before you started HRT ie the Climagest? If so yes you were defo post-meno and could have started on a continuous combined HRT ie a no-bleed type as others have said. Even so many women still experience bleeding within the first 6 months even of the no-bleed type - especially as your body (uterus) is getting used to having oestrogen again.
However even though you were given the sequential HRT ie which are expected to give a bleed, I am still surprised like Dancinggirl that your bleeds lasted 3 weeks and perhpas this should be investigated again.
What dose of Climagest were you on? Also how long have you been bleeding this month and when in the cycle did they start - towards the end of the green tablets?
Hurdity x