Phonetic Phails

I’m helping a caller with his product, but I need to get the serial number (it’s alphanumeric). The line is garbled, so I try this to ensure I get the correct number:

Me: “Alright, sir, could you read the serial number phonetically?”

Caller: “What’s that?”

Me: “For example, ‘C’ as in cat, ‘D’ as in dog, etc…”

Caller: “Okay, ‘D’ as in dog, 2 as in… 2 dogs…”