Before I get into online betting, I need to know if I place a surebet, or a wager somewhere, that the sites I use will not cancel it due to their own errors, incorrect odds, etc, and leave me screwed.
Which sites 1) Don't allow themselves this privilege or 2) Don't in practice ever do this?
Which sites 1) Don't allow themselves this privilege or 2) Don't in practice ever do this?