Does your father qualify here. https://www.bt.com/exp/broadband/home-essentials?s_cid=con_bt_dg-home_awin_aff_vidAJM_110483-Editori...
Registered here. https://www.bt.com/help/here-for-you
Did your father phone BT to renew his broadband and phone contract? Was this recently and was he moved to digital voice?
Good morning @Neilc1, welcome to the BT Community Forums.
When was it that your father called up and completed the contract renewal?
If it's within the last 14 days, then he should absolutely be able to revert this back and then regrade to something that would be a better fit for his needs.
Did he mention what options they were promoting when he called up most recently too?
Peter
This sort of thing is becoming quite typical of the BT/EE sales team these days unfortunately. Overselling, mis-selling , switching users to EE without telling them etc.
Never used to be like this and shame on BT/EE for it.