What is this 'toner' you speak of?

Me: "Hello, American Awesome Products*."

Customer: "Hi, I need some toner for my Lexmark 9000 blah blah printer."

Me: "Ok, what's the product number."

Customer: "I don't know. It's for a Lexmark blah blah blah..."

Me: "Do you have the old toner? It should say on the old cartridge what the number is."

Customer: "I don't have it with me, but it's the toner for a Lexmark blah blah blah...It's black ink"

I am not a printer/fax machine/copy machine expert! Nor is this a store that sells those things. I HAVE NO IDEA WHAT TYPE OF TONER YOUR MACHINE NEEDS!!!!!!!

no.idea.what.so.ever

Look it up on the internets--that's what they are for.

whew, glad I got that off my chest.

*this is not the real name of my company