Mum's landline bill

[BeanyGrain]

Hi

Am  finding  this site very hard to navigate hence posting  here.  Problem: My elderly mum's phone  bill has  a different number on it  than her landline -  how do  we solve this?  My brother spoke to someone after 3 hours of being on  the phone to you/ being  redirected  and was  told they couldn't help. 

Please help, many  thanks

[ferguson]

Go to Help with your TalkTalk service > Your Account & Billing. But as you seem to be having difficulty I have made you a shortcut, click here.