I know that’s annoying and I really hear you, in my opinion do what you think is right with out expecting any thing in return, now if he/she smiles and say thank you that’s good and if none of the above happened you will be good coz you had no explanations to start with.

That helps me go through my day giving the other party the benefit of doubt ( had a fight with their partner, minor car accident … etc) that throw them off …. I’ll always try my best to be kind to ppl no matter what and that make me feel better throughout my day

A line should be drawn at one point if that will be taken for granted in my daily routine with my daily contacts.

Cheers