Design org charts which can pull in Excel spreadsheet data automatically -- 2

We publish org charts for companies in the media and advertising sector. We don't find suitable applications. Typically the designs are clunky and many do not auto-update with new data. We want neat clean custom designs for our clients but ones we can update automatically from name and contact data held in a spreadsheet. Right now I am interested to hear from people experienced in org chart design or GraphML as to how they would approach this task. I imagine it could be one week's work to interpret the structures in media owner sales teams (digital, print, audiovisual, creative services, senior managers) and output suitable templates. I think pulling in the data to the relevant boxes may be straightforward but I don't know. I would be interested to hear proposals from designers. Examples of previous work are essential. The work and IP will belong to us on handover.