Buy Online:
800-836-8580
http://www.shopcasio.com/

Contact Form:
https://www.casio.com/support/contactus/

Technical Support:
800-435-7732 Option 2
(Mon-Fri 9am-5pm EST)
(Sat/Sun 10am-8pm EST)

Repair Support:
800-706-2534 Option 2
(Mon-Fri 9am-5pm EST)
800-435-7732 Option 1
(Sat/Sun 10am-8pm EST)

For Customers in Canada: 800-661-2274