jimmy944 - that's exactly the way it should be. And in fact the way it is. My Internet doesn't work, I shout at Zen Internet, not their supplier (Openreach). Zen then do some (decent) sanity checks and diagnostics, and if believed to be a line fault, send it to Openreach (or BT Wholesale is it needs exchange work).
I pay Zen a lot more money than most people pay BT for an FTTC connection, partly due to some specific needs, partly due to the better support:
I have 2 lines in here, both now FTTC. One is via Zen (the one OOF runs on), on is BT Business (not really the same as "BT" that most of us use). A few years back, they were both 512k RA-ADSL, and both suffered an appalling error rate (thousands of CRC errors a minute). I knew what the problem was, and how to fix it, but needed BT (pre Openreach) to do it. Call Zen, explain, did the usual sanity checks with master socket and filters, they could see the errors being reported on the line, and got it raised with BT in less than 15 mins. Then call BT about the BT Business line, took about 2hrs of jumping through their hoops, it was clear their call centre staff weren't that technical. Once the BT engineers turned up (on seperate days, grrr), I told them what they needed to do (change e side to one that wasn't via a link cable to another cabinet, cutting the line length from 7km to 3km

), and job jobbed

Another occasion I have trouble with a Zen line (at bro's business), we'd done a lot of network kit swapouts and reconfiguration, but weren't getting internet connectivity for long enough to do anything useful. Call up Zen, usual sanity checks, then they start to diagnose it, and come back (within 10-15mins) saying that our router is responding oddly to the radius authentication packets - turns out a router that we'd previous used purely for LAN routing had a hardware fault on its ADSL interface, and we'd muddled up the routers when we'd reapplied the configs following the changes. Can't see many other ISPs being able to help diagnose that one, beyond "must be your equipment sir". OK, maybe Andrews and Arnold.
The OPs issue is he's got between OR and BT, and had become stuck in the middle, failing to realise they are NOT the same company, and the enforced seperations between them. He should be grumbling at BT, not OR or BTW. His only contact, other than providing access, should be with BT.