As a friendly reminder, penalties will never be reversed. Unfortunately all disconnections and game crashes counts as leaving the match and will be penalized appropriately. The game server has no way to discern a legitimate disconnection or game crash from one that is forcefully caused by a dishonest player to bypass leaver penalties. You can learn about this policy here:
Its frustrating to deal with disconnections, but understand that problems can occur anywhere between your computer and the game server. This is why support agents and players like myself ask for WinMTRs because it helps us identify where the problem exists.
Look for a label with barcodes usually on the bottom or backside of the router. If you see such a label try photographing that label, upload it to a image host such as TinyPic and share the link here. Note you can bypass any link blockers by typing the link between two tick marks (`).
`www.tinypic.com/url`