Multiple request to cease marketing ignored

I acquired vehicle finance with Wesbank through my local car dealership a little while ago. I don't recall giving consent for Wesbank to use my information to market to me, but I may be mistaken. However, towards the end of 2015 (I think) I got fed up with the emails, SMSes and post and so called Wesbank requesting that they stop sending me marketing correspondence.<br> <br> Thereafter I continued to receive email and postal correspondence, although the SMSes seemed to have stopped. After a few more emails and letters I emailed Wesbank (2016-01-12) and requested, for a second time, that they stop sending me all marketing correspondence. Since then the emails seemed to have stopped, but the post continues and I am fed up.<br> <br> They are the worst spammers that I believe I have encountered.