KB338: eCommerce Payment Gateway Support
Customer Support Contact for Cybersource:
1-800-709-7779
Here’s the link to the Cybersource support information.
https://support.cybersource.com/s/article/How-Do-I-Contact-CyberSource-Customer-Support
This will help guide you on how to create the e-ticket within your CyberSource environment to reach the Cybersource support team directly. The direct support phone number 800.709.7779, and be sure to have your CyberSource Merchant ID ready for reference.
Customer Support Contact for Touchnet:
1-888-621-4451