You can call from home and the person on the other end—French-speaking or English-speaking, there's no difference—does not give you a proper answer.
There is also the way you address them. If you are ill, you won't be speaking calmly and smiling nicely. You could well be getting more and more anxious. If the person on the other end interprets that as a threat or whatever, they may just hang up on you. In a case like that, you have no recourse because you do not know their name. I have asked the people I was talking to for their name and no one has ever wanted to tell me.