Any techies at regional Audi dealer?

[md.]

Bit of a long shot but hopefully some fellow NE PHer might be able to help. Wondering if anybody knows anyone at a regiinal Audi dealer (can pm details as not sure if I'm allowed to name), ideally as a mechanic. Not looking to get anyone into trouble or anything negative I simply want to confirm that some work has been carried out on a car that I recently bought. The seller said the work was done after hours and cash exchanged but obviously no paperwork could change hands so I can't go in and enquire. As said previous I realise its a long shot but would help massively if something comes of it!