Speed Dialing

I have always used the speed dialing function on my Panasonic cordless phone. I never used Xfinity’s speed dialing so when I signed a new contract I was not concerned that speed dialing was not included. But......Since Xfinity took away my speed dialing feature the speed dialing on my Panasonic phone does not work. No one can figure it out. Xfinity blames it on the phone Panasonic blames it on Xfinity. My sister just read nude her Xfinity contract and they did away with speed dialing and the same thing happened to her. I am very perplexed. Has anyone had the same problem