Pay $100 at a time which is good for up to a year. Why can't you send me a usage report so I can see what I am billed for?
PC Mobile does not send out usage reports. All charges for your calls, outgoing text messages, and airtime charges incurred when using services like call forwarding, call waiting - even long distance - are simply deducted from your account credit balance. If you want information on your account activity, you can try calling PC Mobile and maybe they can provide you with the information.