I work at a grocery store. I am customer service desk and self check out attendant on Sundays. Earlier a customer came through self checkout and was complaining about needing to check himself out mean while there were three registers open behind him with cashiers. He chose to go self checkout so I don’t get why he was complaining. I simply ignored his rant and helped him when needed. I’ve been at the store for 16 years so nothing really gets me worked up anymore but I still don’t understand why he didn’t go to a register with a cashier🤷🏻‍♀️