Subscriptions loaded without consent!

Got this sns yesterday. Never loaded any subscription. "Y'ello. Thank you for subscribing to Mzansi Rhythm at R5.00/day or lesser amount. Visit now http://mtn.to/***. To manage your subscriptions dial *123# or visit https://mtnapp.mtn.co.za/webaxn?***5 Ts&Cs www.mtn.co.za" Immediately dialed *123# and canceled subscription. Phoned MTN ***** department. All they say is sorry. Don't load airtime fir 24 hours! ***!!!