The Contact Us page on RD.com lists Reader's Digest's customer service phone number. A Contact Customer Service link on that page connects to a Reader's Digest webpage on Buysub.com that shows an additional phone number.
As of 2015, the number on RD.com is listed as their toll-free Customer Service number and is 800-310-2181. The number listed on Buysub.com, which is a page for Reader's Digest's Customer Care Center, is also toll free and is 888-217-3346.
The Contact Us page on RD.com lists firstname.lastname@example.org as an address to send email inquiries to, and the Buysub.com page lists RDAcustserv@cdsfulfillment.com as an additional email address contact.