It is very important to know the Microsoft Adcenter office and tele numbers to be able to contact them in the need of emergency. The Microsoft advertising adcenter Registered Office in India is as following:
F-40, N.D.S.E.-I, New Delhi-110049
Though this address is not publically available but we find it in the billing invoice generated by Microsoft for our advertisement campaign.
Alternatively you can contact them at http://support.adcenter.microsoft (dot)com