Poor Service AGAIN

Why does Fedex treat it's customers so badly. The clearing department - specifically Minenhle do not do their job properly. Despite being told several times verbally and by email that we have an account number and providing VAT and Importer numbers (which should be on file) this is ignored. Consequently the parcel just sits and sits. This happens every time and takes days and days to resolve. I spend more time managing Fedex than actually running my business.