Hi bushrod,
Thanks for posting on our community forums. If you would like to change your current mobile monthly tariff, you will need to call our team to do this.
Unfortumately, tarriff changes are not something we deal with from our community forums.
You can call our Mobile team on 789/0345 600 0789 or use our messaging services on 0753 301 6422. Please be aware this is not an immediate response team, however we will get back to you as quickly as possible.
Kind regards Jodi.