I have completed a tidy-up of the entries for BT. You can view them all by searching for
bt-
(put the dash at the end).
The alternatives for the main residential customer services, which is 150 from BT lines, is 0800 800150 and 0330 1234 150. Similarly, residential faults, 151, is 0800 800151 or 0330 1234 151. And BT Total Broadband customer services and technical support is 0800 111 4567 or 0330 123 4567.
These are the only 0330 numbers I can find for BT. 152 and 154 which are business customer services and business faults respectively are 0800 800152 and 0800 800154 but
not 0330 1234 152/0330 1234 154.