Shopping at Cotton On at Novena Square last Saturday.

Had a 30% discount voucher so went a little mad. But there were lots of things I didn't buy. Anyway, point is, when I paid, I realised that the 2 for $30 T-shirts were actually cheaper without the 30% discount. Because how the cashier did it was to change the T-shirt price to the original, which was $24.95, then deduct 30%, so I ended up paying $35 for the 2 for $30 shirts. Obviously, I went back to the cashier and asked her nicely if I can take out these 2 shirts and then pay for them separately (i.e. pay $30 and not use the 30% for the 2 items). At first, she said no. Then later, she said 'Refund? Ok, wait.' *calls someone else* So, this guy came. And we repeated the story to him. Then he was like 'No la, you use the discount, definitely cheaper than without'. So I counted for him. And he didn't believe me. So he took out his calculator and said:

'If you use the discount *punches in $24.95, multiplied it by 2, stared at me for a while and the number $49.90, then clear the memory*' he continues 'if you use the discount' *repeats above procedure but somehow manages to do the 70% of $49.90 part* He repeats 'so if you use the discount you get this number (which was around $35 as I have previously counted for him). 'Then' he continues 'if you pay the promotional price for the 2 for $30 shirts, you have to pay...' *punches in $24.95 multiply by 2 for the third time in his speech, stares at the number*

I interrupted him of course and said 'If I buy the 2 for $30 shirts, I pay $30, right?'

He ignores me and continues punching numbers in his calculator.
Uh. Since when do 2-for-$30 shirts not cost $30?!
Thankfully, in the end, he decided to trust my maths, and refunded everything for me.
It was hilarious.