In the last six months my 2010 Audi A4 has gone from using 1 litre of oil per 1000 km to 1 litre per 500 km. Any advice I could get on assistance and approach on this matter would be greatly appreciated, as I do not have the money for the repairs or another car.
At 1 litre per 1000 km your engine was already consuming too much oil, at double that rate of consumption it is way too much. VW/Audi engines have a reputation for using oil and need to be checked regularly to ensure you don't inadvertently cause damage by letting it run low. You could try appealing to their sense of goodwill and ask Audi to cover part of the cost of repairs, but as your car is seven years old I don't believe you have much chance of success.