Effective March 24, 2014, support for the Eloqua cloud services transitioned to My Oracle Support and as of January 12, 2015, support by telephone has transitioned to the Oracle Support hotlines. Please see the links below for access to My Oracle Support and the Oracle Support hotlines.
The same support team who supported Eloqua's cloud services continues to do so today.
My Oracle Support
You can also access My Oracle Support through Customer Central on your Eloqua application.
To contact Oracle Support by phone, refer to the Oracle Support Contacts Global Directory.
Scroll down that page past the Acquired Product Support section and the Online Support section for the list of phone numbers by country.