Nitrobetting cancelled my bonus when it was already around 70% in progress. So I nearly had my 50mbtc earned and they just cancelled it. Be prepared to have your bonuses cancelled mid rollover for no particular reason if you play with Nitrobetting.
If they canceled your bonus, surely there must be some reason for it? Regardless of whether we agree with that reason, they will have to come up with an explanation. Maybe it is set somewhere that after 70% of completing your bonus you get the amount in your account? Whether the date of the bonus expired?
They said I am not a recreational bettor....in other words: I was winning to much to their liking. That's fine, limit me then or whatever. Or say: we won't have any bonuses for your moving forward. But do not cancel a pending bonus which was almost completed. This is childish.