As usual with overseas support, I have had to make over 10 phone calls to TalkTalk, a live chat session where they only offered to arrange a callback and I have posted on the official forums where they offered a callback again. I have had 2 engineer visits and would've had 2 more if they had their way. I have gone through the rigmarole of scripted troubleshooting many times, TalkTalk have even provided me with a replacement router which I chose to keep using because the way I see it, a new router can't be a bad thing (even though the router isn't causing the issue).
The issue is currently with the CEO's Office as a complaint because the fault manager people I was speaking to kept saying they couldn't find a fault.
Multicast configuration issues have been thrown around as a possible cause by engineers and it was something I had thought of myself but today I realised something which could be a conclusion to the issue. I checked my exchange on the BT Wholesale checker and it didn't show 'Fibre Multicast' as a service currently available to me despite me having FTTC.
It looks to me like TalkTalk are billing me for a product which is unavailable in my area and I'd like other people's views on this situation. Do Openreach sometimes forget to set up Fibre Multicast, can TalkTalk request for them to set it up or will I just have to wait?