With the extremely high volume of foreclosures and reo properties, I think many of the bank reo departments are overwhelmed with calls from interested buyers, investors and real estate professionals.
This is their official contact info found on their website:
1761 East St Andrew Place
Santa Ana, CA 92705
Tel: (714) 247 6000
Fax: (714) 247 6022
For more information about getting in touch with Deutsche Bank's REO department, visit this blog post written by a realtor explaining the process he followed.