Whoops, too late.

[Wayne]

This was at the start of the email:

UNITED NATIONS OFFICE OF INTERNATIONAL OVERSIGHT SERVICES
Internal Audit, Monitoring, Consulting and Investigations Division
Telephone Line:+4422040687

This was at the end of it:

For oral discussion, i will release my telephone line once i
hear from you okay.

Maybe they mean they’ll give you the last digit of the number if you reply, or finally put the phone back into its cradle?