It really depends and the best way is to check what you are being billed for.
When I applied for a Globe postpaid plan I was billed on the spot!
i think yes!!
check on the bill itself on the Billing Duration. first bill compose of less than 30 days.. its pro rated actually.
from the date of activation to cut off,.however succeeding bill will be 30-day duration..
for bill detailed explanation might ask assistance at any nearest globe store or Globe Hotline and other channels indicated in hard copy of your bill.