I'm sorry to hear this has happened.
Best thing to do is sending an email to
service@shapeways.com they will be able to help you out.
1)
Polishing media may get stuck in small engraved details and sharp corners
Steel products are tumbled with a corn polishing media to smooth out their surface. If your product has small engraved details or sharp corners, this polishing media may get stuck. To avoid this issue, make your engraved details over 2mm wide and avoid sharp corners.
2)
This material is 3D printed 420 Stainless Steel infused with bronze, and has a final composition of approximately 60% steel and 40% bronze. The way that bronze infiltrates into the steel can vary, and this changes the color of your product. If there is a higher concentration of Bronze near the surface of the product, it will take on more of Bronze's deep brown color. This has the most noticeable impact on Stainless Steel, but can also affect the shade of other finishes.
Hope this information helps!
Mitch