Once a verbal contract is made, it stands in a court of law!!
Been there done that in a previous business, I took a woman to court, she said to the judge " I did not sign anything ", he told her that she had made a Verbal Contract , and that was good enough for him, she lost, I won plus costs.
It was a lot of agro and took months to get to the conclusion, I would not do it again.
As in my previous post, Take it on the chin and forget it, life is too short for dealing with cretins.