So, to summarise - as best I understand it - the Vodafone position appears to be this:
i) The issue is resolved;
ii) If (i) above is not correct, contact us through social media, and we will provide you with a scripted response to the effect that we may raise the matter again with Xiaomi , who may then respond with a further 'fix' some time before the next ice age;
iii) If anyone suggests that the patches pushed out so far appear to be degrading battery performances and/or require a factory reset to be effective, we will stick our fingers in our ears and cover our eyes - if we don't know there's a problem it can't be our fault can it?
iv) Although we know the contact details of all our affected customers, we will simply not voluntarily make contact with them to either advise time-scales for corrective patches, or provide any pointers as to how the issue of compensation is to be managed.
@Danny @Natasha - have I omitted anything?
