Your current options as I see them:
Use social media to your advantage. Accuse them flat out of stealing and you will file a DMCA claim. You start on their own twitter channel if they have one.
Actually do file that claim but keep on spamming social media about the progress, replies and other video's they might have stolen. Also how it makes you feel, this is not to be underestimated.
If you really want to, give out freebies to anybody pointing out another stolen or duplicated video and create a website.
Perhaps you could place something on scam sites too so it pops up whenever the company is googled.
They will ignore you at first, then try and intimidate you, then comply.
Someone spending 1 hour a day for a month on neg repping a company, with evidence even, can't be good for that company.
Also, play the Calimero-card whenever you can. ( they are so big and strong, what is poor little old me gonna do? It is so unfair they always pick on the little guy...

)
People like an underdog.
My guess is you can get your vlog deleted/embedded within a week if your social influence is big enough.
But, it sucks to do all that and a watermark might be a solution to prevent any future problems.
I think its up to you, either you go after them full force or just don't waste any time. It is a choice only you can make.
On a side note I think you are hilarious, I forwarded your link to a friend.
Anyways, I hope this helps and I wish you the best of luck with this.
