OK,so I've been wanting to change my plan from 500c to 750ULD combo and was wondering when to actually apply coz i read about this guy who applied on the 1st of the month and 2-3 days later his speed changed(to 60KBps) and the site showed his plan as 750ULD so he browsed the whole month thinking it to be unlimited and later got billed for the usage,when he later asked the authorities they said the billing starts from the 1st of the next month.So should I apply on the 25th so it maybe gets done in 2-3 days and and i can start the next month with 750 plan