Outcomes being altered by VAR are often a point of contention in such cases. I've seen different takes on rules from several platforms to be honest.
I guess you will have to be more specific.
See the rules of the specific platform you put your bet on, ask their support, and if you feel wronged either because they went directly against their own rules or because there was no specific mention, you can come here and create a scam accusation on the following board: https://bitcointalk.org/index.php?board=83.0