Golden Windows

We purchased a new construction house in 2012, and the door/window supplier was Golden windows. Around 2015, we started to notice that the door leaked when it rained. There was also water in the door threshold, and the glass insert was also leaking. I contacted Golden Windows in summer 2016, and they came to try to seal up the glass insert and replaced a weatherstripping. However, that didn't fix the problem.

Now is 2017, and one day when it rained, the door leaked again, and the water got to the basement. I then took a closer look at the door myself and it seems there is a lot of water in the door threshold when it rains, and the threshold doesn't drain well. It also appears that both ends of the threshold have gaps, and I see water dripping to the basement through the subfloor directly under the area of the door jambs, especially the right side. I'm wondering if there is something incorrect or missing (e.g., drain pan) in the original installation, and the service repair appointment a year ago didn't solve the leak issue.

I have since emailed the service repair department, but the responses have been slow. I'm not sure if they are willing to or have the ability to fix the leak issue.

Based only on the after-sale service, I won't recommend Golden Windows to anyone.