person A: I am so mad! I just got charged double for something I only got one of! 
person B: Oh my_comma_ I hope it was only a sincere error and not the charger being malicious
person A: The check out person didn't look the brightest and I should have known to check before I left.  The place is like 30 minutes away.  Now it's not worth wasting the gas to get it fixed.
person B: Ugh that must be so aggravating that you can't even get your money back. I would suggest calling and telling the manager.