That is appalling treatment you have had from MMC. You ordered a new box so that is what you should have received. If they had offered a refurbished box against new you could have considered the option. They have to take back the junk they sent & send a brand new box with a grovelling apology. An offer to cover the cost of the reinstall would also be in order.

Many years ago a friend bought a new MG overdrive, in the new wooden box was a very dirty used item. Supplier apologised & gave him what he ordered.

Tim