Drop Dead, Marketing!

Financial Institutions never cease to amaze me. On the one hand they conduct really optimistic ad campaigns in the media, with totally unrealistic slogans like "We'd like to be Your Bank" or "How Can We Help You?". But to be fair, my bank does actually provide useful services and better security than most.
It's just their marketing department that bothers me. They send me "promotional" (i.e. invasive) SMS messages to my cell phone that I didn't ask for. I gave them permission to tell me about transactions going through my credit card and current account, but since when does that give them license to tell me about a new kind of product or a competition?
Why is this a problem, you ask? Well, because I use the SMS service on my phone to send and receive important messages. And marketing shlock is singularly unimportant and frankly its a bloody nuisance.
What's worse than annoying SMS messages are people who think they can phone me at meal times and sell me stuff. Again, my bank is the biggest culprit, mainly because I'm careful about who I give my cell number to. They wanted to sell me a FNB funeral plan. I told them to drop dead.