There was no "guaranteed" buybacks.
This is outrageous lie:
source: http://web.archive.org/web/20170809030225/http://betking.io/
You lied to investors then you fucked them:
Yes, Dean, you're right.
My 0.5BTC investment IS worth 528$.
My 0.5BTC investment IS worth 528$.
Now you are making some token swaps/whatever to fool more people. I would suggest everyone to read this thread from the beginning.