@Olihill99 To build on what others have said above, I think you need to remember first that not only do you need to provide evidence of motivation to use a pump, but also
practical evidence that you have the skills to insert, calibrate, understand all the settings, have attended a DAFNE course, etc and do so on an ongoing basis to qualify for both a CGM and a pump. Also pump prescriptions are currently only done from hospital endocrinologists, so it is your hospital diabetes centre that you need to lobby - GPs & DSNs cannot dispense pumps to my knowledge, though their support is also useful. Sadly all CCG budgets are under severe stress, some more than others.
BTW please don't give up on exercise - have you tried weightlifting/resistance work - for most people this causes a transitory rise in BGs, but is best for building maintaining muscle.