Hi...and welcome to the Forum
Sorry to hear you're having difficulties after the update...can't imagine how annoyed I would be if it were my car!
We have had a couple of members on here mention that they have had the update and no issues as yet. However, it depends on how the update was carried out and if there is any option to reverse it to previous settings. Alternatively, I would find a VW Audi specialist equipped with the necessary diagnostic platform who can reset the Electronic Control Modules for the powertrain back to basic settings and go from there.
Keep us informed of how you get on with it
Cheers Trevor