The video is pretty much self explanatory. They claimed that we forfeit the first match because one of their team mates was able to join the session. If anything that should be a forfeit on their part because the one of their members joined our team and distracted my teammates.
Someone joined the session on the 2nd match which by their logic is an automatic forfeit. The last map was left unplayed after a full 10 mins passed and the lobby was disbanded.