[jaywalk]

In a Fortune 500 company, I'd imagine it could be quite difficult to definitively prove that they are not a customer of any one organization.

The company I work for is not Fortune 500, but we have several Fortune 500 customers. The amount of inane bullshit we have to deal with as a result is mind-boggling.

[mrtksn]

I recall an incident of large company paying whatever bill they receive and only to find out that they never had a contract with some of the companies and never receiving any service.

[yjftsjthsd-h]

If it makes you feel better, it goes both ways; I once signed up for a utility, got service, and discovered months later that they somehow completed the paperwork to give me service but not to actually bill me.