Hi I need help with my Civil Dispute Resolution homework. In the scenario, Person B is being sued for not paying the suppliers for doing a job. Person B was an employer of Person A and Person A needed some work to be done for the company, he was too busy and told Person B to deal with the process of getting a company and a quotation. Person A accepted what Person B brought and then told Person B to communicate with the suppliers and get the work done as quickly as possible. The quotation was sent to Person B's address so when the work was done, the invoice was also sent to him mistakenly, as it should ahve gone to Person A.

Since then, Person B is being sued for not paying and Person B has gone MIA.

My questions are what cases, laws and facts can I use to defend Person B?

Also, how strong is Person B's evidence? All the dealings were done orally over the phone and the quotation went to B as well.

And also, what steps can I take to locate Person A?

Any help on this topic would help so much, I would very much appreciate it!