MTN keeps spamming / advertising

With reference to my previous (unactioned) complaints:<br> http://hellopeter.com/mtn/complaints/mtn-spam-advertising-***<br> http://hellopeter.com/mtn/complaints/wont-stop-spam-***<br> <br> MTN Refuses to stop sending spam and advertising data and internet bundles.<br> Example:<br> \Yello! You have..... FREE MTN WoW R15 plus 15MB bonus.... Expires today at 23h59. Ts and Cs apply"<br> <br> I've tried all available means to stop this spam and they won't stop.<br> In MTN's previous replies they claim that I'm not subscribed to any content services and that WASPA is responsible (but I've checked with them"