They don't know how to pick managers. They pick their best salespeople to be managers with no consideration at all whether they have management skills or not. The result is they promote their best salespeople out of sales positions and none of their managers know how to actually manage. It results in lower sales and frustrated employees.
Also their equipment is grossly outdated and they don't staff their branches anywhere near enough. I would frequently end up having to work overtime because I didn't want to abandon one of my coworkers, but then not be able to report that overtime because overtime wasn't approved by the regional manager. It was highly illegal and a position we were put in because of criminal understaffing.