First off, the boxer should have advocated for you at the store. I had an issue with a stamp that a boxer had done in another country and when the picture was provided to me, I asked that they go back to the store. They called instead and came back to tell me the store would not be able to do anything. I asked that he advocate for me and get a tag replacement if they weren't going to fix the stamp. I also messaged shopandbox site to say the same thing as I should not have to pay each time the person goes to the store when it should not have been accepted the first time. It got fixed and I was not charged additional fees thankfully.
However, the con of this is I have been seeing more and more boxers refuse to do the hotstamping for shoppers because of various issues at LV (stamping quality, not selling tags, taking longer for turn around, etc). Most recently customs in London had issues where the boxer paid customs fee and waited to get the package of tags sent, but 2-3 weeks later and no delivery. Shopper had to request (strongly) that the boxer go to the post office in person and not deal with it by phone. Finally, they suddenly found the lost package "fell of the shelf" and delivered it about 6 weeks after it was mailed out. I think it won't be long before they stop offering to get hotstamps entirely (Japan boxer stopped offering, Taiwan boxer didn't want to anymore, and a couple decided to increase their charges because of not being able to get it done in one day and having to make two separate trips).