Spam gmails

I have nothing against Discovery Bank itself. But I am against their spam gmails. I am always getting so many of their spam gmails. Where do they get our gmails from? We never gave it to them. They have no right to pester us with spam gmails that we do not want. Please leave us alone. I do not want your gmails. It is a pain. We do not want it. If I wanted it I would have asked for it. Your spam gmails only put us off your product.