Engine light is on

I bought a CLA250 on last Friday ( 10/25/13 ). Three days later, my engine light was on on the way to my office, the mileage was around 296 miles.

This Monday (10/28/13), I drove back to the dealer, and they said someone has the same problem, and has already noticed the Mercedes. It is a program issue, it won't effect the car and safety; now the engineers are trying to fix up the problem with re-programing. Once they are done, they will let me know so I can bring the car to the dealership to install it.

They told me this before I sent it to the maintenance, I don't know if they were trying to avoid me to get the official record or what? Right now I'm still driving the car with the engine light on.

Any suggestion? What should I do right now?