We need someone or some device that can move a large 680 pound 6 foot wide, top heavy cabinet from its stand at about waist height, down to a couple of ground-level dollies so we can wheel it through a normal-sized doorway.

Can you help?

This is in redwood city. If we can get it onto dollies, we can move it from there.

I have no experience with this sort of thing. We showed up with five people and even with one of the employees at the location helping we didn't feel comfortable even trying it, as it could easily result in serious injury.