Thank you Mark, I am well thank you, hope you are holding okay with all the stress.
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In regards to the email, I would advise, at the beginning of the email, that you explain flat you are currently living in as well as your neighbour.
Then copy this bit to explain the situation:
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Meter Point Administration Number (MPAN) is the same for above two mentioned flats, this one MPAN holds two meter serial numbers, one per each flat. E.ON Next cannot have two different accounts considering there is only one MPAN. This is causing a lot of issues to residents, such as staying off supply and not being able to get relevant help due to only one of those flats actually having an account.
Flat 10C does not exist on the National Data Base because it has a related meter to MPAN of other flat.
Please, to avoid this, create MPAN separately for flat 10C so their own account and registration can be completed. Thank you, please do this as an emergency priority due to weather and cold temperatures.
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In regards to vouchers, I cannot disclose if and what has been issued to your neighbour as that is private information which we can reveal only to them, once they are available, ask them in regards to vouchers and check if any vouchers in your name have arrived, but as said, I belive this can only be sorted once your housing association resolves it.
Also, contact council in case housing association is not of help - do not give up as this will not be able to get resolved.