Sharing My Experience
Its pointless to contact youtube for this copyright claims its a well know problem on youtube, even bigger youtuber have suffered due to this but still youtube has no way to protect its creator against this fraud copy right strikes.. the only right path right now is to get hold of them on twitter @YTCreators @TeamYouTube and also tag some Big youtubers so that they could like or retweet your issue which will make those youtube handle not to give you automated response.
I had similar issue i did exactly what i mentioned above and YT responded on twitter and my strike was revoked
Well i done post that. Tagged @TeamYoutube and they said send a printscreen then they sent a standard response and ignore. Haven't tagged big YouTubers as I have no idea who most are and of them experienced this issue or would care to retweet lol.