I looked around and this number is shown as the 
Broadband Starter
 Helpline number (India). Although suggested by someone as an alternative, 
0870 010 2462
 is shown as the 
Broadband Plus and Max
 Helpline (UK).
0870 010 2462
 shown in various places as Customer support or Customer services (Broadband Access Service, Member Services and Payment Handling Services) so it may give only Startup support. (was previously for Wanadoo support)
0870 190 0667
 shows specifically as 
Broadband Plus and Max
 support so be prepared for referal back to the 0905.
0870 220 2002
 comes up as 
Wanadoo Wireless & Talk Customer Support
, but it's another number to try.
Please note that NONE of these has been tested so we'd appreciate some feedback as to whether they work or not. At least you save over 40p or so per minute, and as they're 24/7, even more than that evenings & weekends. If any are not 24/7, please let us know as well.
Now I don't know if you're having 
Startup Problems or not, but there is an 0800 for that specific support ONLY.
Let me know & I will post that as well.  

Also see the 
Orange Broadband Problems support website.