There are several topics like this so you’re not alone. Further they can’t change the results so you’re stuck with it.
Also, lose your next match. That should break you out of the glitch since if you keep winning you’ll find yourself still being credited with losses. Sorry.
Posting here is useful too, as sometimes players can respond more quickly (ala @Shiratori in this thread). But to provide specific data to the devs a ticket is the best option.