Hello @hamoodi,
Thank you for having shared the troubleshooting steps you took with the Community!
To narrow down the situation and to figure out whether the root cause is the SIM card or the phone, could you answer these questions:
1) Have you tried using your SIM card inside another phone? Are you getting the same result with the other phone?
2) Were you able to call that number previously? Have you noticed more or less since when you can't call that number?
3) Is it a Canadian number? Does it have the same area code? Is it long distance or international?
4) Are you able to send a text message to that number (if it's another wireless number)?
Please let the Community know. 
