I sued a company for breach of contract on a loan. The company is now insolvent. I just learned recently that officers of the company entered into mediation talks with a different creditor (apparently the company also owes the creditor money). I want to depose that creditor and find out more about the settlement talks and see if there are money paid that should be used to pay me. The creditor said there is a confidentiality agreement that prohibits him from talking to me. Is this true?