So sorry to hear about the issues with your sink. It sounds frustrating, and we really wish we had known about this earlier to offer our support. Let’s tackle this together.
For the staining and those pesky metal marks, we’ve got a couple of tricks that usually do the trick. First, give the sink a good scrub with a Magic Eraser. It’s gentle but effective for this kind of thing. After you’ve got it looking better, applying some Luster Pro Oil can really help protect the surface and make future cleaning a breeze. It might also help with making those metal marks a thing of the past.
We’re here to help out further if you need it, whether it's more tips or anything else regarding your sink. Feel free to reach out to us directly at tdonovan@karran.com will respond to you immediately to resolve your issue.