Ugh, the frustration.
I had a similar experience, where I was referred for physio, and waited months and months and chased up similar circular letters. When I actually got the appointment, it turned out to be five minutes long, and the physio just prodded me, and went “oh yes, this is definitely bad”, and then handed me a photocopied sheet of some basic stretches. When I said “er, am I not getting treated?” she went “oh, that’s not actually covered now, you need to be referred again, and it takes about three months currently, just keep taking the painkillers instead”. I ended up going to a training school and being one of the guinea pigs the graduating students have to practice on to get their clinical hours, because I couldn’t afford to go private.