Tweet
Background: I work for a factory that makes bespoke parts for customers - nothing is off the shelf and must be made from scratch. Lead times can be 4-6 weeks, depending on delivery of bulk plastic etc.
I get an email from a customer, asking when she can expect delivery of an order.
I reply: "Sorry, I don't appear to have that order on our system, do you know when you placed it and to which email address it was sent?"
Cust: "Oh, I haven't placed it yet, but I wanted to know when I could have it."
Me: "Umm, okay, what did you want to order?"
Cust: "It's written on the purchase order??!!"
Me: "Yes madam, but we are not in possession of your purchase order. Y'know, because you haven't sent it yet?"
Cust: "Oh. I'll come back to you."
Me: "Have a nice day now!"
Not sucky, but definitely a brain burp 
I get an email from a customer, asking when she can expect delivery of an order.
I reply: "Sorry, I don't appear to have that order on our system, do you know when you placed it and to which email address it was sent?"
Cust: "Oh, I haven't placed it yet, but I wanted to know when I could have it."
Me: "Umm, okay, what did you want to order?"
Cust: "It's written on the purchase order??!!"
Me: "Yes madam, but we are not in possession of your purchase order. Y'know, because you haven't sent it yet?"
Cust: "Oh. I'll come back to you."
Me: "Have a nice day now!"
Not sucky, but definitely a brain burp
Comment