That's carelessness and worthy of a complaint to the battery-swappers who changed the bracelet. You can decide for yourself if it's worth the effort and what sort of response you might expect from them. If they offer to polish the case for you, DECLINE! They've proven they can't remove a strap, I wouldn't let them put that near a polishing wheel.
However, the scratches don't look deep from the photos. Spend a few £/$'s on a cape cod cloth and give it a gentle clean one evening. Do it slowly, carefully and avoid the bevels. The cape cod cloth will take most, if not all, of those marks out.
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