Just in case the phone lines are busy,........
You can also use the contact form to request a MAC
http://support.talkta.../php/enduser/ask.php?
It can also be requested by sending a letter to:
TalkTalk,
Mac Requests
PO Box 15324
Birmingham
B46 9BX
You should expect to receive your MAC within five working days and a written response to your letter within seven working days of us receiving your correspondence, however, please note that by writing this may delay our response due to postal services.