If you'd like to write to us, please address your letter to: TalkTalk (TTR)PO Box 675SalfordM5 0NL To help us deal with your query quickly, please confirm the following information. Your full name Your TalkTalk phone or mobile number Your signature And one of the following: The 3rd & 6th characters of the password we ask for when you speak to Customer Services The last 4 digits of the bank account number or payment card you use to pay for your service Your TalkTalk account number Personal security answer provided when you step up your TalkTalk account If you chose to write to us, your letter will be given to one of our specialist agents who will always attempt to contact you by telephone to resolve your query.