DirectAxis, You are a Pain in the Proverbial

I'm sick to death of getting unsolicited daily text messages from Direct Axis, a company that I've never dealt with, that I don't want to deal with and offering me loans that I don't want and don't need. I try to block them, but they just change their number. Their message tells me I can "unsubscribe". Why the hell should I have to go to the trouble of doing that when I never subscribed in the first place? Why do they keep changing their dispatching number just to get around my blocking them on my phone? This is harassment pure and simple, not to mention a violation of sections 11(1) and (2) of the Consumer Protection Act 68 of 2008. Please make them stop (my wife also gets these messages and she also does not want them).