WONT STOP SENDING ME MARKETING SMSES

I couple of months ago, a sales consultant contacted me from Outsurance. <br> One of my friends gave him my contact details so that he could contact me.<br> As I repeatedly told the guy, I am not interested in moving insurance companies.<br> I never signed up or gave Outsurance any permission to send me marketing information.<br> I have in the past opted out of the marketing SMS and I am STILL receiving this.<br> <br> I would like to have my personal information removed from their database.<br> <br> I am highly disgusted that they send me marketing SMSes without my consent and continue to do so after I have requested them to stop.