Something doesn’t seem to be right here. I understand that the casinos have to be proactive but the level of persistence is hugely different between that of players and affiliates. No one in the right minds would resort to such a counterproductive strategy with players. It never works 9/10 times it will fail. It is not credit card or lettings industry.
However this naivety is possible if these guys have outsourced this part of CS to a third party company and they get paid on results.