Loose charging port in Surface 3

I bought the surface 3 in March and noticed that there was a lot of play in the charging port. It's getting worse to the point where sometimes it just falls out, I've tried other chargers/the charger in my phone and it seems to be the actual device. It's still under warranty so I am thinking of sending it in for repair as I'm concerned that it could cause issues in the future. Has anyone else had this problem? How would I contact Microsoft about it?