Unauthorised/unexplained charges on client accounts

ABSA Stockbrokers raised charges on my account and when I queried it I was referred to another organisation for clarity. The e-mail address provided by ABSA Stockbrokers is invalid and further requests to ABSA for the correct contact details are being ignored.

Why should another organisation explain charges raised by ABSA Stockbrokers and why should I be seeking this - my account is with ABSA Stockbrokers, not anyone else! Does ABSA Stockbrokers not understand the charges they raise on clients' accounts or are they running a **** with fees as it seems their lack of response supports this?

This is not the first time I've had an issue with fees raised by ABSA Stockbrokers so it seems a lot like a **** to me - how can they not understand the fees they raise on client accounts? Is it ignorance/incompetence/*****?