Change your surgery and, meanwhile, ring your surgery and insist on speaking to the doctor and not the practice Manager.
She is not a doctor and can have no idea how your husband's conditions affect him. In fact it might be dangerous and outside the law for her to have to done so. If your DH gets COVID, not having had the jab and dies or is gravely ill becausehe has not had the booster and the reason is because the practice manager decided to practice medicine without a licence (which is effectively what she has done) you could sue the practice.
People eating and drinking on the go
Just been scammed! hotelvalues.com