Getting disconnected from internet mid game..

Twice now tonight I have been on the verge of winning against high ranked opponents in Slayer and all of a sudden my net drops out and I get a DNF and ranked down really badly. Can you please at least work out the difference between a d/c and a quit so I don’t lose so much rank. Not sure what is causing me to get booted in these games but any help would be appreciated. I don’t want to end up with a ban because of it.