I have a 3 year service plan but don't think it would cover anything other than annual / mileage scheduled services.
For the rising oil thing I only had that once in the car's first year so under warranty was towed into the dealer and they changed the oil. The later magic 'fix' of software and moving the X on the dipstick have prevented recurrence.
As Mary says I reckon you'd be going down the warranty route if you have this problem.