I have bought a new Macbook Pro on 4th Feb 2018 and found there was right half keyboard no responding on 6th Feb. And after send QCD Technology Pte Ltd (Apple authorized service center), the technician called in the same day and told me it is OS issue. They have reinstalled for me the problem has been solved. On the 16th March, I encountered same problem again. I went down the QCD again. The reception told me it is same problem OS issue. Upon I asking for re-installation the OS, the reception immoderately told me it is chargeable of 187SGD. I was very upset and questioned her why it is free last service. She said no, it didn't mention in last report they did reinstall the OS for me. Then seems a manger or supervisor immediately nearby explained to me they can guide me to reinstall OS without charges. And then a technician come out from the service center, I explained to him the problem and asked why the same problem come back again just a month time. Then he said they can send the Macbook to service center to do a complete test.