But a lot of marketing people seem to think that the best way to do this is to annoy potential or existing customers, so that their employer's brand will always come to mind first, even if it is tainted with somewhat negative feelings about the product. In one way, I don't blame them - that technique is empirically proven to work, marketing people want to meet their targets, get paid, and go home like everyone else does, and the uncertain nature of business communication makes it difficult to adjust to the information preferences of each individual consumer.
But in another way, I do blame them, for two reasons. One, because they are deliberately choosing to clutter up people's lives with unwanted solicitations of attention, often despite specifically being asked not to. One thing I really miss about living in the Netherlands is that the post office there gives you stickers you can put on your mail box/slot to indicate whether you are willing to accept different kinds of commercial mail, both generic and personal.
Two, because a great deal of marketing material goes beyond a solicitation and description of goods and services and into bullshit and deception. Almost every marketing professional I've ever met seems to think that some dishonesty in commercial matters is OK. It's understandable, as they're partly backed by a legal system that historically regards many false claims in advertising as 'mere puffery' - essentially saying that because consumers are exposed to a lot of bullshit anyway, it's OK to bullshit them.
I disagree, and the greater the degree of bullshit I receive from any given business, the more likely I am to retaliate against them in some fashion, by adding them to spam lists, badmouthing them within my social circle, or occasionally responding with bullshit communications of my own designed to waste their time - followed up with helpful comparisons to their own marketing materials so they understand that deception doesn't pay.