maybe do "change plan" , but apply it immediately, in this scenario I am assuming your payment only goes to your account, but hasn't been debited to a plan.
similar thing has happened to me before when buying sim card from retail store...the sim card was brand new, but somehow I couldn't active it, and when the moderator responded to my question, as it turned out the card was already activated by someone...
I would like to add that the account owner's name of your old chatr number needs to be exactly the same as your new public mobile owner name...otherwise it will likely get rejected (imagine someone can easily steal your number by transfering your num...
