Hi Ella50
I'm sorry no one was able to answer your question. Unfortunately, I can't tell you why they wanted to speak to you. It sounds as if they just want to clarify your circumstances. I have heard of one person with a similar note, and it was nothing to worry about. They confirmed she was still ill with one question and then explained what she would be getting when, and that was it. Will it be the same for you? I can't tell you, because all these things are individual.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems