Years ago I shipped 100kg + of exhibition equipment and brochures to an exhibition in Ufa.
All collected on time, things were looking good,I'd allowed a week for it to get there.
Three weeks later, with the parcel still in Moscow, we found out that delivey Ufa was by motorbike, but no one had flagged it as small packets only on the booking system.
Luckily our "battle hardended" sales manager had carried a second suitcase full of brochures and demo kit as a back up. He was one of the few at the show with anything!
Yep it was DHL. But that was the only real screw up in a few years of doing similar things.