Absolutely not.
I think that sellers who go above and beyond when they make a mistake is great, and they should be applauded. But a seller who admits to a mistake and makes the buyer whole again should not be penalized for that.
This seller initiated and apologized for their mistake and made you whole on the extra shipping charges, and from the looks of it did all of this quite quickly without hesitation. I do not believe a seller should be expected to go above and beyond making the buyer whole again when the seller makes a mistake, and to go beyond that and even contemplate punishing the seller for not doing so is just stupid IMO.
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