Struggling to get PR codes

[Horrgakx]

I need to order some parts but I need the PR (build) codes. I don't have a user / service manual and there's no sticker in the wheel-well.
I tried Audi customer service phoneline but they said they couldn't help and told me to contact my local Audi dealership <COUGH>Carlisle Audi</COUGH> but they are just plain ignoring me.
Likely too much like hard work ╮（╯＿╰）╭

Anyone know of another method, or friendly dealer who can help?

Thanks