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We are closed on Saturdays, Sundays and Turkish public holidays.
The HIS Istanbul office currently serves by phone and e-mail. Phone: Monday–Friday 09:00–18:00 Closed on weekends and public holidays.
Inquiries received before 3pm Türkiye time are answered within 24 hours. Inquiries after 3pm are answered the next business day. Weekend messages are answered on Monday. For urgent matters, please call us.
Our reply e-mails are sometimes automatically sorted into the spam (junk) folder.
If you have not received a reply within 24 hours, please first check your spam folder.