Not even when I slowly and methodically spell out a four-letter word followed by "off".
Then he'll ask me to read out the numbers because I may have a "serious problem".
About now, I'll feign concern and say something like: "Oh my god. That's the last thing I need. I've got a huge international money transfer to make this afternoon and I need the computer".
You can practically hear the drooling at the other end of the line. Then I'll say: "Hang on. There's a message come up. Have you got a pen? I'll read it out to you".
Now, up to this point the conversation has been extremely civil. I am always called "Sir". There is no reason to think it will change.
And it doesn't. Not even when I slowly and methodically spell out a four-letter word followed by "off". There is a moment's pause as he works out he's been duped then he says: "You (insert your preference here) off too sir," and hangs up.
Now, the fact that this has kept happening means one of two things. Either I am a great source of entertainment to BMS or the guy in charge of the New Zealand desk has run out of work.
If you think about it BMS is obviously quite a big operation, it's not going to be run from the back of a takeaway in a side street.
They must have hundreds of people, possibly even thousands, doing the same thing. Day in, day out. Going through the phone book of every country in the world.
The guy who got the New Zealand desk must have thought he had a job for life. Until he realised there's only four million of us. He's got five staff working for him all ringing us poor old Kiwis. It won't take them long.
Mind you, it's not all that bad. He's got a window. But he looks across the corridor in envy at the US desk. The bloke in charge there has 250 people working for him. They've got calls planned for the next 50 years.
But not on the New Zealand desk. He's been through the phone book twice already. Now he's going round again and just trying to fill in time till he can get a transfer over to the US desk. I think I might ring his boss and dob him in. I just need to find the number.
It might require a few calls and a bit of time but I'm sure I'll eventually find someone who knows who he is.
Luckily I've got a Bombay phone book laying around. It's just the right thickness I can use it as a foot stool. So I think I'll get right on it.
But I'll just answer the phone first.