Amazon.com
800-201-7575 Cust. service
877-251-0696 Seller support
866-348-2492 Rebate status ( Press 0 to bypass menu)
206-266-2992 Local or int'l
   
Ebay.com
888-749-3229 Cust. service 6:30a-5:30p
800-322-9266 M-F (Pacific)

PayPal.com     
888-215-5506 Cust. service 6a-12midnight (Central)
888-221-1161 7 days/wk

Buy.com     
877-780-2464 Cust. service     7a-7p M-F (Mountain) 8a-12p Sat

Dell.com     
800-915-3355 Sales
800-624-9897 Customer care
800-624-9896 Tech support     7a-10p M-F; 8am-6pm; Sat/Sun; 24/7 Press 3  Pressing 0,0 (zero, zero) will immediately let you bypass menu

Half.com   
800-545-9857 Cust. service     7a-5p M-F (Mountain)

Overstock.com   
800-989-0135 Cust. service   24/7

You can find more here

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