Phone: 
toll-free in North America: 1 (800) 3 DIALOG (1 800 334 2564) toll-free in most countries outside North America:
1 (800) 33 DIALOG (1 800 3334 2564)
Fax: 919 468 9890
Email:
dialogcustomer@thomson.com
Messages are typically answered within one business day.
Postal address:
11000 Regency Parkway,
Suite 10,
Cary, NC
27511