Change of behavior towards customers

I was never happy with the assistance from Dava Reddy at Medirite in gateway that old guy is hardly smiling nor greeting from 2019 since I saw he’s still the same thing it is like you nagging when you ask for something from not him alone infact the whole staff can you rather take them for a customer service training and always be helpful but him alone he is a tough nut to crack hardly greet or shouts for the next customer to me I wouldn’t hire such person who’s not so open to customers COVID 19 will not infect by greeting