MTN **** - VRJUICE SMS?!

I received a SMS this morning stating the following: "Thank you for subscribing to the vrjuice service at R5/day. 1st day FREE. For Vrjuice videos visit: bit/ly/mtnvrjuice. To opt out dial *464*970#. Ts & Cs mtnplay.co.za For support dial 135" Firstly, I do not even have a cellphone contract with MTN and secondly, I NEVER subscribed to anything?! Please advise what this is and how I can get rid of it???