Cannot unpublish package with invalid name

Incorrect package: chromo - color previews
Correct package: chromo-color-previews

I accidentally renamed my package to a name that contained spaces. For some reason, the apm let me publish this change, but when I realized users were not able to install the package without errors, I promptly changed the name back. Somehow in this process, I produced duplicate packages (one with the valid name and another with the invalid name).

Now when I publish any new changes, they get published to the valid package (which is good). The problem is that there still exists the invalid package on the marketplace which is misleading to users. I cannot find a way to delete this package as the only package I now have on my PC is the valid one.

Is there a way I can fix this or do I need to contact support. Who would I contact to have this fixed?