Joe Costello (Dublin Central, Labour) | Oireachtas source

I have a question on the text of the correspondence as I am not sure what it means. Does it mean that the bank cannot make representatives available? Does it mean that they are not available at this moment? Will they be available at a later time? Would it be more appropriate for somebody from Geneva to attend? I know that London is the location of its headquarters, but the events took place in Geneva. It seems to be stating they have no information and that anybody in London who might have it is not available. I am not sure whether it means that they are not available at this moment to come to us or whether they might be available to come in the future.