SFMIX contact

Hi list, Does anybody have a contact for SFMIX? We have been trying to get in touch with SFMIX for few months now without any luck. We emailed tech-c@sfmix.org serval times in the last few months but got no replies, calls to the number listed on their website also goes unanswered. Any help either on or off the list is much appreciated. Thanks, Honghao Zeng