Subscribed without consent - *****ing money little by little

My most recent problem with MTN- I received this SMS today: 'Yello! Thank you for subscribing to Goal TV @ R3/day. 1st day FREE. Watch now http://bit.ly/2h9mMri . To opt out dial *464*970#. Ts&Cs mtnplay.co.za For support dial 135.'

I never subscribed to anything! After consulting the internet to see if this was legitimate, I saw there was a lot of other customers complaining about the same issue, even a few years back.

MTN subscribes their customers to services without their consent and then just takes their money little by little! As if expiring airtime and data isn't enough!