Website & Phone:
You have to buy a bitcoin and convert it to INF but by then you have already lost your money.
Through social media (in my case Tinder) they lure you into creating an account on this website, they give you an invitation code so you can create an account. By working with an invitation code it seems like only you have access to this special site, but it's all a scam. Once you have send a bitcoin to the account, you won't be able to withdraw it.