"Brick wall"

Cannot understand why it is so difficult to get a blood test. I appreciate that the hospital which performed my thyroidectomy over 1 month ago has not sent my discharge letter, but I have supplied my patient discharge letter and am now requesting a blood test to check my T levels and am told it is not possible until I have had a conversation with my GP. This would, infact, be welcome at this point, as since early November when I had an urgent referral from the out of hours GP I was sent to because I could not get an appointment with my GP, and following my surgery, which my GP was informed of and the subsequent 5 weeks recovery I have yet to have any conversations with my GP at all. Am waiting, in hopeful anticipation, of some sort of contact.