From USCIS:

February 10, 2014 – Barbaricum is a professional research firm that is contracted by USCIS to conduct customer satisfaction surveys and focus groups on behalf of U.S. Citizenship and Immigration Services (USCIS). USCIS customers may receive an email or phone call from Barbaricum asking them to provide feedback on their customer service. Please be assured that Barbaricum is authorized to conduct these surveys. Your feedback is extremely valuable and we appreciate you taking the time to participate in our surveys and focus groups. For more information, please contact the Public Engagement Division at [email protected].