I work for Media Drum at present and as an agency we really to try to put our photographers at the heart of what we do (placing images into news media outlets).
We work hard to source great material and work with contributors to place their material into some of the best known sites and publications.
It can sometimes take a little time for clients to pay us, however we continually push for these to go through and we are transparent in providing updates.
We are sorry if in this instance we did not match your expectations and if we can in anyway improve or resolve your problem, please do contact us.