i just got off work. so one of the customer service managers came up to me near the end of my shift and said that a customer complained about me. he said i didnt talk to him. i realized that i hadnt been greeting people because i get so focused on my work. she said i need to smile and greet them. i felt embarrassed. i have to talk to every customer from now on. also i find it hard to carry on a conversation with them. i feel uncomfortable when they say something out of the normal hey how are u. i just nod or say yes, maybe im just being shy. ive always been a little shy to strangers. it just irks me that a customer would complain about me but i guess people want to talk to the cashier. honestly im not there to be social i just want to get money and work. but its part of the job to be friendly. i had problems with this at my previous jobs at grocery stores. i quit because of it once. a customer complained about me not being "cheery enough". i was like this is ridiculous and walked out on the spot.