Banned for 14 days on my birthday....

Look i just got banned for 14 days is there any way i can appeal this i only responded to the comments someone on my team was making he was basically mirroring what i was saying yet he gets no punishment, you only post one side of the logs so it makes it look worse and the first game you said i flamed in is ridiculous to get banned from now i cant even reconnect on any accounts to the chat system and im not sure why my team was blaming me and i said they should blame themselves is that so bad and i told them to stop soloing as they were playing like we were not going to lose and we lost because of it. I was improving my behavior before this then i had one slip up and i got banned for 14 days seems a little harsh there are people who do this every game who never get punished is there anyway i can undo this they seem to of banned me across all of my accounts what a shitty b day this has turned out to be I worked so hard to get gold and now it does not mean anything as i dont get season rewards i may aswell just quit the game now tbh theres no point in playing if i can slip up in one game and lose everything ive worked for over the last 3 years