Their raison d'etre is to deliver parcels. They failed and so fail as a credible company.
Mistakes happen but unhelpful out of date web tracking, impotent chat handlers typing out script driven platitudes, and no sense of customer service are not mistakes. They are symptoms of a dinosaur service and DPD is well past its sell date. Companies like this should not survive: DPD your clock says 5 minutes to Midnight, good night