Even if it was so, couldn't you just use another sportsbook to make the other bet?!
Yeah even though directbet charges a lot of juice (big house edge)
they tend to have a lot more betting options than most especially on the olympics.
I like how fast they responded also, trust me most books could care
less about your arb issues.
Did directbet actually know what the arbitrage it is? It is not about bet on different markets only.
But for me in this case op just disappointed on unavailable bet and feel cheated because they did not provide more bets . Not directbet fault at all in my point of view.