Good afternoon @Sue1945
Welcome to the forums and thank you for taking the time to post.
I am sorry to hear that you are having issues with the quality of the calls.
Please can you confirm for me, is your landline connected though the traditional socket or via the hub?
Please could you also let me know if you have tried another handset? whilst it dose sound link a basic thing to try you would be surprised at the amount of issues that are resolved from this.
Kind regards,
Zak_M
Kind regards,
Zak_M