Can't make calls on I phone 5

[Anon]

Can't make free calls since yesterday don membership is still on

[dalyer]

Any messages when you log into your online account?

When does your current membership expire?

Any chance you breached the fair usage limits and got barred for the remainder of your current monthly membership period?

Did anything change on the phone (e.g. software update)?

Can you receive calls and send/receive texts?

Hope this helps.