Comcast headquarters are not located in Washington DC. See below link. http://wiki.answers.com/Q/In_which_state_is_Comcast_corporate_headquarters_located
215-981-7790
Comcast corporate headquarters are located at: One Comcast Center Philadelphia, PA 19103 215-286-1700
800 266-2278, Johnson City.
If you look up Comcast's website, they'll have a section called "contact us". Or call your local Comcast.
There are a few numbers you can call at the Comcast Corporate Headquarters. Residential costumers call 1800-266-2278 and new customers can call 1800-647-6516. If you call either of these numbers, it will route you to Comcast National Corporate in Philly. There they will open up a case and escalate it to your Regional Corporate office. There is no direct number for your Regional Office.
The Visa corporate headquarters phone number is 650-432-3200.
Comcast human resources in Philadelphia email address
479.273.4000
not sure....need this number
the number is 1-612-307-6542
Kmart does not have a corporate office in Kentucky. The number for their corporate headquarters in Illinois is 847-286-2500.
The Comcast corporate office in Florida is located at 1500 N Main St, Jacksonville, FL 32206. Their phone number is (904) 310-4640.