This was the message that I got when I logged into my instance of Eloqua the other day. Not sure of the path as I have not needed to call.
SUPPORT PHONE NUMBER CHANGES
The legacy phone numbers used to access Eloqua’s Product Support group have been retired. The current numbers have been REPLACED WITH ACCESS TO THE GLOBAL ORACLE TELEPHONE SUPPORT NUMBERS for customers.
The following numbers should be used to contact support directly with any issues you may need to raise as part of a Service Request:
US (Toll-free): 1-800-223-1711
Canada (Toll-free): 1-800-668-8921
United Kingdom: +44 870 4000 900
Australia: +61 2 8817 7600
Germany: +49 180 2000 170
Switzerland: +41 61 425 62 00
Singapore: 800 7111 005
Hong Kong: 800 963 604