Terrible service

Mercedes Benz supp**** my company with "new" broken parts, it has been send back more than 3 weeks, ive received no feedback as I need to follow up almost everyday. More stories occur in direction of not replacing these broken parts received by the agent. MB is not the one that needs to explain in my company why my clients vehicle is not ready for collection, al MB wants is to rob their clients of their money, but client service satisfaction.... None. This is not the first time.