Unauthorised subscription and charges to MTN Play Harvest and airG without permission.

<p>I received these SMS texts from MTN and was subsequently charged R3 a day for these without subscribing and without my permission. I do not even know what these are for</p> <p> </p> <p>Welcome to MTN Play Harvest Frenzy! Billed * R1/day. Click here to continue: www.airg.com/m/mtnzaSHF </p> <p><br />Welcome to MTN Play airG! First day FREE then R2/day. Click here to continue: http://airg.com/mtnza or Click here to Unsubscribe http://m.airg.ca/out</p> <p> </p> <p>I think this is very unfair to loyal customers. Can MTN please cancel this and stop the unauthorised charges of things I did not subscribe to?</p>