As an employee I get BT Total Broadband Option 3 free. Unfortunately we also suffer the same poor speeds and Indian tech support.
I am now seriously considering paying another provider, possibly cable for a service that works properly. Even if there are problems at least I can complain to trading standards or take them to court, both options denied by the free service.
As for BT Vision don't go there, my box lasted just over a month before I threw it in the bin.