I have a supplier that recently pushed out the delivery on a part (which I've purchased before) from 4 weeks to 12 weeks. Needless to say, this is outside my customer's window for the project they have going on, and my customer wants to know why it's late.
Thus, I have been peppering my vendor with questions. Is this a supply chain issue? Are their sub-vendors late? Is the factory behind schedule? Is there an infrastructure issue that we need to know about, and possibly try to find another supplier?
Each time I sent her an email, she would simply reply that the new delivery is 12 weeks, with no other explanation. She repeated this statement each time I asked her why the lead time tripled.
Finally, exasperated, I changed tactics, and sent her the following message:
What is driving the lead time? Does it have to go through a 4 week heat-treat process? Did the factory get leveled by a flood/earthquake? Are you waiting for it to be forged by dwarves under a mountain, using primitive tools, and then carried by donkeys?
Her response: In the future, please refrain from the inappropriate comments. I do not treat you with any disrespect. She then rambled on again how the lead time is 12 weeks and she won't respond to me again if I keep using inappropriate language.
I knew she wasn't going to change her answer, but I at least got her worked up a little. I just hope she knew I meant the mythological dwarves found in the Lord of the Rings, and not someone you'd find in a sideshow, or a reality tv show. Because if it was the latter, well, that would've been inappropriate.