Being told by angry parents that you have ruined Christmas for their apple of their eye...but it's Christmas eve...you could have called to check whether you had it in stock....and you did kind of leave it to the last minute to buy the most popular toy of the holidays.
Parents, who you know, are trying to circumvent Challenge 25, with the children sneaking the age-rated DVD to their parents to scan. I saw what you were trying to do there...it's the policy. No dice. You are not worth jeopardizing my future for.
People who look like they could be under 25, getting all uppity when I challenge them, politely, for ID. "What do you mean, I need ID to buy a knife" --> (thinking) "No, it's because you look under 25 and are trying to buy a knife. It's store policy"
Refunds....shudders.....because you know there are always customers who try to return a BRANDED product without the reciept. --> (thinking) "How am I supposed to know that you brought it from here???"...or the customers who return something literally 5 minutes after they brought it. And despite repeating the return policy on bedding (it can't be returned if opened unless defective or damaged, due to hygiene reasons...it's the law!!), there are always the customers who try to return undamaged bedding just because they have changed their mind. Ugh.
Customers who literally throw their money at you. Oh...okay then...
When you know something is out of stock, because you have already been in the magical "back" (because it has everything, right??!) to check for a customer, only to be asked to check in the back. By several customers. I know that it didn't come in by delivery.
Click and Collect. I'm so glad I do not do Click and Collect groceries. Sorry...they didn't train me on that, because I went to university when that happened.
When we have everybody working the tills and a big queue, and nobody wants to use the self service despite some colleague offering to show them how to use it, only to complain about waiting in the queue.
Ugh...