Lost airtime to YD Games & did not subscribe to this.

My airtime keeps disappearing. Today I topped up R60 and bought a data bundle for R40. My balance was R0.29. I called 135 and spoke to a consultant. They told me I am subscribed to YD Games. I have never in my life subscribed to any of these stupid things. These idiots are now *****ing my money. They took my airtime without me subscribing to anything. What is MTN doing to fix this???? How do I get my airtime back. The consultant told me she cancelled my subscription and that she will send me the contact details for YD Games. These ******* need to be stopped and MTN need to stop them from *****ing airtime!!!