I was in a similar situation to you but eventually was approved for funding and I am now waiting for the funding from my CCG.
I tried everything my clinic asked me too but eventually I was approved...
It is a frustrating long winded process (for me anyways) especially when you see other users being offered a pump... there's many people who would love to be pumping and being denied a chance.
Even if your Hba1c's are good, you still have a good case for a pump if you can show, as you mention, that you having a lot of hypos.
You will eventually loose your hypo signs if you haven't already started doing so. This is a good case for asking for a pump especially as if they simply advise you to reduced your insulin doses you then run increased of complications which no one ever wants. Make sure they're fully aware of why your Hba1c's are "good" but you still need a pump.
In my case I couldn't get a decent Hba1c without excessive hypos and now have virtually no hypo awareness left. I kept careful diaries...meter downloads as backup to show I was dedicated in trying get good control, they finally loaned me a CGM and the final piece of proof they needed was its downloaded data to finally apply for a funding me a pump.
Dont give up keep at your team and take every opportunity to remind them you need a pump
Hope this helps
Alan