Try rebooting your device if doesn't help then try your sim in other phone if available to check if its service or hardware issue.
If nothing help then send a msg to mod they will look after you.
Contact any moderator by private message to help you with the process.
In your private message the following info
* PM account email address
* PM phone number
* Detailed explanation
Here is the link for how to contact moderators
http://productioncommunity.publicmobile.ca/t5/Knowledge-Base/Updiated-Contacting-our-Community-Moder...What you do click on link the webpage will open. You will see a mod team click on any name then scroll down all the way and click on send a private msg then explain your problem
Thanks"
** I am not a Mod, please do not include any private info in a private message to me.**