BT 4600 phone problem?

Keep getting 50 full calls message up even tho I have received no calls. I delete and message returns within a short time

Barry
April 2023

pages 32, 78 and 79 here:

https://shop.bt.com/content/uni2/documentation/by4h/3653_bt4600_ug_call_blocking_version_iss.4_%5B3%5D.pdf

Also see:

https://www.bt.com/help/user-guides/phones/landline-phones/cordless-phones-with-answer-machine/bt4600

Hufd
July 2022