You should be upset with the shipping company not Tischer.. Honestly if it was me I would grab a pair of pliers fixe the minor bend to ground strap bracket fixes the other slip joint and move on. None of the issues you posted will effect the performance of the system or the apperarnce.
This happens everyday when shipping large items. Only way to prevent this 100% would be to build a wooden crate and charge 5 times the amount to ship it freight.