kindly deactivate the mozook ringtone services from my mobile +254713059262

These tx-based Mozook ringtones coming all too frequent and devouring my load faster than my calls and SMS. I cannot even open it because when I try to open it, it says "subcribe to packet data first". One ringtone a year is enough, not everyday which does not even open automatically and needs another subscription to open it. I'm sure there more people who feel cheated by these rimgtones.
How do you stop this service?

Yours Truly.
Mobile #0561262959
Mobily-Jeddah, KSA