AirG social services

I keep receiving smses to say that my recurring subscription fee of R7 will be billed with a link to click on to unsubscribe. I don't even know what AirG social services is and have not subscribed to anything online nor from my phone. The link provided does not even sent me to where I can unsubscribe. This is very frustrating and annoying and *****ing people's money as so many are affected by this in the same manner!