Hi, sorry for the late posting.
To confirm, you are in a market 3 area, so you'll be paying £15.99 a month for your broadband service.
The lead price wasn't available to you when you changed products, it's just a straight switch over to the new pricing. There's a problem already raised with our developers to correct this. The account change process shows the correct information, it's the email that's incorrect here.
There's also been a problem with the email referring to pricing details for the product being changed from, rather than to, which is also what happened in misha's case. That was fixed earlier this week.
Finally, the speed estimate for your line is for the ADSL (up to 8Mb) service, rather than the ADSL2+ (up to 20Mb) service. In some cases, we can't get data back from the ADSL2+ line checker, so rather than give no result, we'll fall back to the ADSL data. In cases such as yours, obviously you'll see a lower estimate than the speed you'd actually be able to receive. A check on your line at the moment gives an estimated speed of 14Mb. (I'd expect you to see a change in profile to something around that value once your line has settled.)
Please note that the estimate is only that, it doesn't affect the speed of the service you'll receive, it merely acts as an indicator. We try and be as accurate as we can, but tend to err on the side of caution if there are difficulties with the system.
Thanks again for raising your concerns and I'm sorry for any problems you've experienced because of them.