Hi grinbox1... I would suggest that you write a formal letter to Globe revoking your authorization to charge your account at least 3 business days before the next payment due date.
It is important that you have that letter received formally by having a proof of receipt either through a signed copy if delivered personally or a registry receipt if done through registered mail.
Have the received copy also sent to your credit card company as proof of your notice so you can dispute charges after the said date.
The above holds true if your contract does not bind you to autocharging due to a free device availed of with your plan and a condition for such an approval.
I was able to cancel mine when I went to a globe center in our area. Sad part is that they photocopied my credit card both front and back. This is a risk and when I confirmed it with my bank I immediately terminated the card. I'm not sure if my card termination stopped it or the fact that I went to Globe Personally. But anyways the autobill stopped and I'm paying my bills manually online. Its a pain when there is a problem with your bill and you have no choice but to pay it. BTW I paid 100 for my card replacement and I'm only 2 months in my contract when I did this.