I’m not surprised. My clinic forgot to refer me for a Dexa scan and after a year on Letrozole I still hadn’t had one. When I asked for one they said that as the GP now issued the prescriptions it was up to them to refer. I think that was pretty wide of the mark tbh but in the end my GP was happy to refer me. I had to wait 4 months for the appointment and another 4 months for the results! 
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Good luck with it. x