No Monthly Billing - No Payment

I gave notice to Autopage seeing as my 24 month contact was in its last month, i will therefore not renewing, they do not inform you in any case, which by law they are obligated to do, they of course let it continue. Got a call from their Accounts Dept as when i am going to settle my account, question i posed, was that i was on My Call 500 package, \have i utilised all available airtime / sms's