6 Months since applied for Naturalisation

Dear all,
It's been 5 and half months since my 75 years old neighbor applied for Naturalisation, is there anyway we can chase the application update?
I have emailed few addresses, mentioned below,
FurtherNationalityEnquiries@homeoffice.gov.uk
NationalityEnquiries@homeoffice.gov.uk
citizenship.Support@homeoffice.gov.uk
NationalitySupportTeamFMT@homeoffice.gov.uk

on 12/01/2022 but no response received.
Couldn't find any number for the contact

There is a UKVI "Helpline" available - https://www.gov.uk/contact-ukvi-inside-outside-uk
Note this is a call centre operation not staffed by UKVI caseworkers. You may be able to leave a message - call agents don't have access to case files.

Many applications take 6 months and sometimes longer.

You wont get a response if you are not the applicant due to gdpr.