Sloppy service

I have an excellent old Bosch hand drill. It's built way better than the current ones available. However I need commutator brushes for it. I phoned BSC and they couldn't find my model on their database so they suggested that I take a sample in to their office and they will then see if they can assist. I did this and gave them the old brushes and was sold a new set for R150. When I opened the packet I find that they are not the correct size. This is really sloppy service and I travelled 30km to get to their office!