How do I claim a missing item or incomplete order?

 
How do I claim a missing item or incomplete order?
Please contact a Customer Service Representative for assistance.
In the U.S. & Canada: 1-800-521-0600 ext. 72873 or email: core_service@proquest.com.       
 
Customers outside the U.S. and Canada should call +800 4997 4111
International Free Phone Number Country List or  +1.734.761.4700 ext. 72825.
Email: core_service@proquest.com.