Sounds like you had a case with some debris on it, or embedded in the case walls. I see it frequently with brass that has been stepped on, on concrete or gravel; or ejected onto crushed gravel.
If the scratches are not too deep, you may be able to polish them out. But, it may take a bit of work, and will increase the internal dimensions in the die.
The better choice would be to contact the manufacturer, and see if they'll replace it.
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Don't even try it. It's even worse than the internet would lead you to believe.
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