Reporting a teammate

First of all you need to make an in-game report against both players, that flags the match so we can be sure that it occurred.

Then you would need to send a report from to our Support team: https://support.deadbydaylight.com/hc/en-us/requests/new with evidence of it happening (video evidence in this case). I would suggest uploading the evidence to YouTube or equivalent first, and putting the link on the Support form as often the bandwidth is too high to allow the report to go through otherwise.