I think my initial comment has been misunderstood.

I can't speak to, nor do I have any interest in, legally pursuing this random vendor.

The op implied, correctly I assume, that the Abbott terms are "toxic".

I am simply restating, as I very commonly do, that this vendor is not a government agency. They are not the IRS. They are not law enforcement. They are an adversarial party until proven otherwise and you owe them nothing.