Malaysia victim here too, I got my replacement unit which is a refurbished unit in June 2017 by bombarding at their Facebook page of Surface and Microsoft. And got the unit sold via Mudah.my last month.
My replacement do not present the flickering problem... yet... I believe... better get it sold just after you have a replacement for the second time, this is the only way. Anyway, after this nightmare, I'm now kind of scared of ultra-thin tablet style of laptop on every brand, they advertised that it can run intensive software, playing AAA game or 'replace your desktop', this is not the case in real life. In my mind, it is just depend the life span of the components inside the tablet, how long it could stand/lasted for the heating, and our country climate should also be taking into consideration as well.
Switched back ultra-book now and I could not be happier. There are many 13" laptop with great specs and the weight is light as well in the market now, and portability should not be a problem like Surface Pro 4.
Good luck mate.
Lord, you even can have you device fixed. They simply told me that they can do nothing to help me since I bought my surface pro 4 in the United States when I went there on a business trip! God knows when will I have another business trip to the US!