Dinner is not taken in the morning

I just dispensed a script for Nexium 40mg 1 after dinner for a man. 

Me: This is Nexium for your stomach. You need to take one tablet a day after dinner.
Him: Oh ok. So is that one time or two times a day?
Me: You only eat dinner once in a day so its one tablet a day.
Him: So is it morning or night?
Me: You eat dinner at night so its at night. 

One tablet a day after dinner. Is it that ambiguous? People just keep on asking questions for the sake of asking. 

Stop giving cards when I don't need them

I don't know why people insist on giving you something when you've already said no.

A lady comes in with a script for Pariet and Rulide. 

She: Do you need my cards?

Me: No need, your medicare and concession card details are already on the computer.

Guess what. She fumbles around in her handbag looking for the cards. 

By this time I've already dispensed the first item. 

She hands me her concession card.

She: Here you go, you might need this.

Me: No I already said your details are on the system.

She: But you don't have my concession card.

Me: I do.......

She: Are you sure? 

By this time I've already finished dispensing both items. And she's still going on and on about her cards.

Efficiency! If I said I don't need it and its on the system already, that's means I don't need it! If I'm not sure, I would say.