Claire - 4 things:
1) When you say you're on continuous utrogestan, is that just 100mg? Have you tried 200mg continuously? If not, ask your doctor if you can try that. (I'm currently on it because I have endo and we are seeing if it will suppress the endo okay.)
2.) If 200mg continuous utrogestan doesn't work for you, you could stay with 100mg and add in the desogestrel POP as well.
3) The other option is the Mirena coil, which should stop all bleeding - it can take up to 6 months to achieve that, but for most women bleeding stops totally. It provides the progesterone part of your HRT so then you would just need the estrogen/Lenzetto.
4) You could try sequential HRT for a while, as it seems that your body wants to bleed, even though you're menopausal. At least that way you would have a scheduled bleed and everyone would relax about it...
You say you've tried 'gels patches and sprays' to stop this, but those are all estrogen products. If you are having bleeding problems, it is the progesterone which usually needs to be adjusted, not the estrogen. Do you feel your doctor is experienced in dealing with HRT, early menopause etc etc?
If you are dealing with exhaustion, weight issues and body aches, you likely need more estrogen than you are currently getting. Lenzetto is quite a low dose estrogen because it's only licenced for 3 sprays (although some doctors prescribe more) and 3 sprays is only about 2 pumps of estrogen IIRC. Which is a 50mcg patch. Whereas someone with an early menopause would usually need at least 100mcg patch and often even more than that. But more estrogen without sorting out the progesterone side of things, is likely just to cause more bleeding - so you do need to figure that side of things out.
You might want to see a private menopause specialist GP. I see someone at Newson Health and they are good at working with things that are slightly challenging like this. It's not cheap but once you've found something that works, you can get them to write to your regular GP and tell them what to prescribe and they can then take over again...