I'm also curious to know why he said such thing. Maybe its better if he share his experience and detail on what he dislike about their new sport provider since maybe he's simple feedback would help the management to figure out then fix if there's something wrong with them.
But if they are sharing that because he's just frustrated or get dismayed with his losses he experience recently.
You're right, if there was a further explanation we might be able to figure out what the problem was, but this is clearly ambiguous. If it's really just an expression of disappointment over losing a bet, then we can't help him. He gambled on his own accord from the start, so even when he lost he should have accepted the reality.