We are sorry you are not happy with the service. If at any time you have questions we are here to answer them (usually within minutes of posting, like this response).
You can find a list of what products are provided with every job here (right where you start a new job):
https://www.mapsmadeeasy.com/maps/new/
We also provide a sample data set and free processing for small jobs so you can know exactly what to expect.
Our new Manual Rereferencing workflow allows you to apply GCP data to jobs that have already been processed to make them more accurate. You can read more about that process here:
https://support.dronesmadeeasy.com/hc/en-us/articles/360000518146-Manual-Rereferencing
The rereferencing process provides all image related outputs, including the DEM. A thin plate spline transformation is applied to the image and elevation data for X/Y adjustments. Only an affine (linear offset) transformation is applied to the elevation data to correct for gross global error. We could take out spherical distortions but most people won't have enough GCP data to make that accurate.