Stake shouldn't have sent you those emails, that is true. But ultimately, you decide what path you will take. Apparently, you aren't strong enough to make that decision yourself. It was just a matter of time before you would slip up. If it wasn't due to an email sent by Stake, it could be because of a billboard you see in your town, an ad on TV, or an offer somewhere online. Seeking professional help is the right way to go about it. That together with the help of those close to you can make a change.
Hope you get those personal issues sorted out and you become a stronger person who knows how to say no.
Good Luck!
I remember some time ago there was a case like the OP's, namely a former gambling addict who had reported a casino to the court just because he kept receiving spam emails like the OP got, but unfortunately I completely forgot the name of the casino and the source of the news, but I remember at that time the news was quite popular and we even discussed it on the forum, and even more great if I'm not wrong, the former gambler managed to beat the casino and also demanded quite a lot of money, maybe there are some members here who still remember the news please back to share.