Nasty security

yesterday i went to mr price to buy something when i arrived there i gave the male security my other plastic so that he close it with selotape he just looked at me and told me that i must greet him first and i dint like that becuase my aim is to buy and not to make relationship/friendship and he refused to close it for me i ended up going to my car and droping my plastick because of bad attitude from security personnel