MTN ******* subscriptions on Vodacom customer

I am a Vodacom customer, and yet I received an SMS from MTN thanking me for subscribing to mtnplay Candypop service at R3.03 per day.

I have not subscribed to this service! Vodacom assured me that I have no WASP subscriptions on my account. MTN call centre (083 135) refuse to help as they say they cannot access my number to see which subscriptions I have, because I am a Vodacom customer!

The opt out code in the SMS (*464*970#) does NOT work. The "STOP ALL" sms to 31050 does not seem to have any effect. HOW am I supposed to stop these ******* charges on my account if the MTN staff refuse to help and the ******* subscription does not reflect on my Vodacom WASP list?

The SMS was sent to me from: ********** 86 the content of the SMS: Yello! Thank You for subscribing to the Candypop service at R3.03/day. 1st day FREE. For Candypop videos visit: http://bit.ly/2DqNtgN . To opt out dial *464*970#. Ts&Cs mtnplay.co.za For support dial 135.

The content of the second SMS: Reminder:Your first day free access to Candypop has ended.You will now be charged 3.03/day.To opt out dial *464*970#.Ts&Cs mtnplay.co.za For support dial 135.

Next step I will lodge a complaint at ICASA.