Welcome to this customer to customer forum.
Which one of these matches your master phone socket?
or or or
Is there any noise on your phone calls? Dial 17070 and select option 2, there should be no noise between the announcements.
Also make sure that the phone number that is announced, matches the number BT said you would get.
The 4th image with open reach over the top, but with only 1 port. There is an engineers port inside the socket. I tried both of these. I don't have a land-line phone so can't test that. I would imagine the engineer did when he was here.
A landline phone is essential, and a basic one costs less then £5. Useful in an emergency as well.
Without one, you risk a £130 charge, as the fault could be within your own wiring.
There is an explanation on this post, which also applies to Infinity.
If the line is noisy, then reporting it as a noisy phone line will get the problem fixed much quicker. Reporting a broadband issue, is going to take a long time.
If you have BT Infinity, then only a home hub 5 or home hub 6 can be used on new installations.
Please connect things up as shown below, and see if you get dial tone, and a broadband connection.
Perhaps you have the same problem I had? Physical Line fine but some sort of authentication issue. They finally managed to fix it for me after 18 days without internet. My thread is here in case it helps you (or anyone else looking for info on similar problems):