This pisses me off to no end. When I answer the phone at work:
Me: Good morning, Gastric Delights*, Jane* speaking.
Them: Is this Gastric Delights*?
Wake up and take the cotton wool out of your ears fuckers, what did i just say?? Sometimes i'm just so tempted to say "no sorry, wrong number" and slam the phone down. Dickheads.
Also, my work phone number and a Bank of QLD phone number are almost identical, bar 1 digit. I get at least one phone call per day (usually more though) which starts with me saying "Good morning, Gastric Delights*, Jane* speaking", (which, incidentally, sounds NOTHING like Bank of Queensland) only to be hit with an onslaught of expletives and yelling, because he or she has found that their savings account is missing 50 cents. I'll either wait patiently with the phone up in the air, until i hear they've stopped and are saying "are you there? are you there?" before replying with, "this isn't the BoQ, it's Gastric Delights*, the number you want is xxxx-xxxx". They're usually very sheepish after that and apologise, but the damage is done. All it takes is for people to actually LISTEN and not be so hell-bent on going postal, and it wouldn't even happen.
So yeah, i'll either do that, or i'll yell back at them and slam the phone down, hopefully deafening them. Moreso the latter nowadays.
*Names of places and people have been changed to protect the privacy of aforementioned places and people.