[mothered]

In their request, the company asked to "sign this legally binding document". It includes all the information about the properties of the case.

From what you said, their take on what is legally binding is false. Do you think they are "lying" or do you think it's also plausible that these rules differ from state to state?

Anyone can generate a document containing the words "sign this legally binding document", but It doesn't mean It's true and correct.

The document per se Is either legally binding by law, or It Isn't. If It's signed In the presence of an authorized witness such as a Justice of the Peace, It will be legally binding thereafter.