Apologies for the delay in response @Moncoe. Did you get a chance to chat with someone in this regards since posting? Are you able to make international calls now? Can you confirm what number you are dialing? Have you entered the prefix 0011 to make the call? If this did not work then could be that international calls are barred from your service. We can definitely unbar it for you just PM us → here your phone number / account number, full name and date of birth to proceed.