Strickly speaking it's not NICE saying no to insulin pumps for type 2's, they haven't got any guidelines for T2 and pumps... It's the same with CGM's there isn't any guidelines covering this.. What it means in reality for us diabetics is that it is more difficult to push PCT's for these pieces of equipment..
There are several T2's that do use insulin pumps funded by the NHS, If I remember rightly this is via a consultant in Liverpool! I suggest that you take a look at the INPUT website, contact John who will be able to give you futher information and advice...
You would have to fight to get hold of a pump and take on your PCT but it is a battle that can be won though...
But for what you are saying, the treatment you've had so far hasn't worked, the question is, is this because are you really a type 2 diabetic? I would be asking your diabetic team, for GAD testing ect to determin that your diabetic status, as it is possiable that your are 1.5/LADA also called slow onset T1... Which would not only explain the lack of response to tablets ect, but also make fighting for the pump a bit easier..
It is even possible that you are suffering a double whammy, having both T1 and T2 diabetes