Multiple Chargers broken in a week

I got a Surface Pro 4. 3 days ago, the charger just stopped working without any obvious reason. No sudden movements, no fluids, cuts or anything else. I only realised it, because I got the low battery warning while the surface was plugged in. The light on the charger isn't on. Jiggling, plugging it in the other way, changing outlets etc didn't work. No light, no charging.The next morning I bought an replacement by logilink, made especially for the surface pro 4. It worked fine until an hour ago, when the same thing happened to it, as to the first charger. Why is this? What can I do to have a r