Unauthorised Hungama Play deduction :: MTN

I went over from MTN to Afrihost on 31 July. I have noticed that R5 is being deducted daily for "Hungama Play - Daily". I did not subscribe to this app or whatever it is. I have tried unsubscribing via ussd codes but do not pick it up anywhere. I have read numerous complaints about similar things happening to other people after moving to Afrihost from MTN. What is going on?