There is the Bypass Audi immobilizer unlock tool, you can find it at uobd2
Its price is fairly reasonable

 

best deal i found $30 at queensway audi. scan the car and they receive code from germany. downtown was asking $75.

 

Audi Canada was no help at all in retrieve my radio code. I have VIN# and Serial#
They insisted that I take my car to a dealer and have it scanned.
Finally after calling many Canadian Audi service dealers and getting the same answer I called Audi USA
A very nice guy in Michigan took my info and in a minute he came back with my 4 digit code.
Code worked perfect..
Thank you Audi USA (800) 822-2834 What a pleasure to talk to you

 

Dont pay for that kind of service. Try the Audi Radio Code Calculator For Retrieving The Lost Unlock Combination calculating tools!