Work in a shop on a route to a busy train station so we're busy early morning, guy comes in on the phone and comes to the counter with his purchases, I ask if he would like a bag and run through items and bag them, he pays contactless so as per the norm I ask if he would like a receipt as they don't automatically print for contactless. Man huffs into his phone and says to caller 'wait a minute, this stupid shop assistant keeps talking and I can't hear you' turns to me and says 'if I want my receipt I will ask for it, you are so rude talking over me when you can clearly see I'm on a call! Have some manners!'
I didn't reply however the person behind him huffed something about 'shop assistants and bad customer service' and then the lady behind that was very nice saying I was just doing my job etc.
I don't think I was rude, if he wanted an interrupted call then maybe he shouldn't have come to the counter?