Hi Barbara,
Thank you for this additional information. I have tidied up the unverified database leaving just one number in there for now, which perhaps Dave will advise on in due course.
Checking on their website under Help and Contacts, and then
Ask us a question there is also a direct e-mail address which says "If you have an emergency or a billing enquiry, you can email us at
customercare@severntrent.co.uk or phone us using the numbers below."
So if in doubt anyone can e-mail it would seem.
I hope this helps.