The KDE sysadmins consist of a group of contributors which maintain the KDE infrastructure.
To organise the work, they use a special section of bugzilla. You can report issues to them at the following special page: https://bugs.kde.org/enter_sysadmin_request.cgi
At that page you can request:
Also, please report not working parts of the infrastructure. Don't just assume someone else has done it!
If you want to request a subversion account, you need a different form, it can be reached via http://techbase.kde.org/Contribute/Get_a_SVN_Account