KB browsing charges cost PhP0.15/kByte of Internet use whether WAP, Edge, 3G or LTE
Globe time-based charging cost P5 per fifteen minutes
default setting for prepaid and postpaid is KB based and you need to switch to time-based charging by texting TIME to 1111
this problem on wrong KB Browsing charges is probably because of Globe's system upgrade last March 14, 2013 where smart ass IT may have screwed up even with Globe's million peso per month expats mostly foreigners can't prevent
There are many Filipinos capable of running Globe's systems and yet Ayala chose to trust foreigners
how to solve the overcharging? call Globe hotline at 730-1000 and ask to waive the charges. Tell them you know about the system upgrade last March and they'll reverse the charges for you
lastly, i wonder what other system bugs and errors will crop up. Globe IT people should be spanked for implementing half-baked, half-tested system!