I do understand how frustrated you are with not actually having your appointments, but when you go for your imaging appointment you will probably get to 'plan' your appointments with them (This is what happens at St Lukes in Guildford). Because they 'plan' in person with patients, it means you can work round other appointments, work schedules, transport problems actually keeping YOU in control, and as usually you are palnning at least 15 consecutive days of treatment, this is why they cant just send them to you..
Hope this info helps put up with the horrible waiting xxxx