Might be worth trying
manilavisaenquiries@fco.gov.uk with a specific question and also saying that the International Enquiry Centre doesn't not know the answer.
You could send one to the above e-mail and mark For The Attention of the Entry Clearance Officer
with another one marked For The Attention of the Entry Clearance Manager.
It just depends how you feel about it. I hate to give up.
I'm still pressing UKVI for a confirmation in writing about entering UK with an expired TB certificate.
I'm determined to get an answer.
Whenever a month has passed I usually make request for the answer under Freedom of Information to the Home Office