I’ve just been to pick up a parcel from the post office. The woman in front of me was on her phone, as in having a conversation, not just texting. She didn’t even acknowledge the man behind the counter, gave him the card, carried on talking, showed her ID, took the parcel and left, without pausing her conversation or saying thank you.
AIBU to think pretty much any phone call can wait a few minutes whilst you’re being served, whether that be at a post office, supermarket, coffee shop or whatever? If you must be talking on your phone, at least pause the conversation and acknowledge the person serving you? It’s just so, so rude not to.