Have you never logged in to your account to see usage, what plan you are on, billing info, etc? You should have created a Self Serve account right when your account was created though I have heard of some activations at dealers getting you working but not instructing you to create the Self Serve account. You would have received a text message with PIN code I believe at activation to set up the Self Serve. If you have Autopay set up I think you can dial 611 to buy add-on, check balance etc. This means you could have done this at the cottage.
AE_Collector
