They should love you if you lose.
I was working a similar angle which was supposed to lose overall to them and recoup it with interest on Betfair. Unfortunately, I hit a streak of winners which meant I was winning from them and losing a lesser amount on BF. If I had known how quickly they would react I would have taken steps to deliberately try to lose some large bets to them and recoup on BF even if I lost a little in the process.
It was a shame because I was picking up $700 per week with no risk.