I dropped Facebook years ago and never bothered much with social media.
I'm still on twitter though. I don't care about hashtags and mentions, but companies do. They're still hooked at this social media bullshit.
So turns out that if you want proper and fast support by most companies, the easiest way is to start talking shit about them on twitter.
Immediate response, by a real human being.
When that stops working, I'll get off twitter.