In my bill there is 19.50 for local airtime.charge. My plan is unlimited .
Hi Chuyue - I see two lines on an account matching your email address. The line ending in 56 is the one that incurred the charges you mentioned above, and these are for call forwarding. You can review the details on pages 11 and 12 of your bill through self-serve. If you think this will be something you need to use regularly, I'd recommend getting the Call Forwarding add-on for $3 month to avoid pay-per-use charges in the future.