Audi disgrace

I own a car dealership. Since January 2017 we have had OVER 20 Audis suffering from excessive oil consumption (year models 2 ********** , mileage under 130 000 kms, most have FSH with agents). Each time we report to Audi, same response... 'car out of Freeway Plan, factory unable to assist.' Our repair bills have been catastrophic..... Shameful situation for a 'Quality brand'