Give it up man. Knowing the name of an auditor is not insider info. If you or anyone else wants to make it material for your own investment decision, that is strictly your own decision. Now if the company or auditor gives out the numbers (of the audit itself), that is different.
BTW, most auditors simply don't give out info as to whether they have a company as client because there is no point in going any further, and is simply a policy of confidentiality, not insider info. If the client gives out the name, it's ok as they have a right to what they want confidential. If you want the name, call the company, and if they choose to give it to you, it is there right, if not, it is there right also, but totally immaterial.
Just checking in, have a good day.
There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true. **Soren kierkegaard