Bad service from delivery guy at Debonairs Pizza Knysna

Disappointed in Debonairs Pizza in Knysna. What an appalling service from their delivery guy. Referring to my mother as an "idiot" because he simply could not find the address and did not even call to find out which building he was meant to deliver in. He went as far as asking her if she wants the pizza as he wanted to take it back. The only reason she took it was because it is my niece's birthday and she had asked that we get her pizza.