Some petri dishes damaged "prior" to shipping

I order three packages of petri dishes. Each package of 20 petri damages came in its own box, which were contained in a single large box. The large box was not damaged whatsoever, but inside, one of the three smaller box was damaged, which means it was damaged prior to shipping. I wrote the seller explaining this fact and hoped they'd respond by offering to sent me another package free of charge; I never received a reply from them.

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