Dell XPS 13 9350 not charging via Thunderbolt 3 port

Hi,

I would greatly appreciate any assistance I can get regarding some problems Im having with my laptop. Long story short I purchased a TB16 dock, managed to update all the drivers and firmware but still cannot seem to get my laptop to charge via the dock.

Everything else works; three displays, ethernet, mouse/keyboard. Everything except charging. The battery bar says that its charging but my battery slowly drains. BIOS says a 45w adapter is connected so it seems to recognized that its plugged in. I know its not the dock since my Brother's 9550 charges just fine. 

Thank you for any help I can get!