01 numbers are chargeable.
Details of call charges can be found here
If you have a phone anytime boost then they are not charged for but you pay a monthly fee for this.
Did you think you were on some special deal?
If do then as @siphosethu-TT requests please elaborate.
You are in the staff's queue for a response.
For a quicker reply can you please ensure you have your personal information up to date in your profile including your TalkTalk landline phone number so your account can be traced. Link here - https://community.talktalk.co.uk/t5/user/myprofilepage/tab/personal-profile:personal-info
If you are unsure of your phone number, you can find this in My Account or dial 17070 from your landline phone and this will confirm the number for you.
You can also add your account number in the private notes field, which only you and the support staff can view.
Please post back when done.
Thank you
Please remember to mark Solved Posts with Best Answer. Doing so helps other customers and saves TalkTalk's Support Team time by only looking at unsolved topics. Thanks, Steve (a fellow customer).
