Horrible delivery guy

I ordered and the delivery guy arrived at the building, we were communicating through the app, he was extremely rude and unprofessional. I called security to allow him into the building and he remained downstairs. He sent me a very rude message and cancelled my order. Might not use this app again if the service of the delivery guys is this disgusting. His name on the app is Nkosinathi Jacob, he is tarnishing the reputation of UberEats honestly.