they have the duty of conficence to all other companies that are KPMG clients smartaxx. Guess what, if they would say SLJB is not our client and than you ask about another client of which you know for sure it is one of their clients, what do you think they will say? Maybe 'sorry but that is confidential information?' Well thats pretty much the same than isnt it. So to get to our point, they can not say anything about any client nor non-client.
BTW: SLJB is a client. Just chill and dont be such a nervous chic and wait for a few days and you will know!