Hello & Welcome to Just Answer,
I'm Greg and will do my best to assist you today.
Sorry to hear of any issue you are having with your phones.
To help you with this issue, may I ask:
1) The FULL Model Number of the phone system you are working with? If this is a cordless system, that model should be printed on a sticker on the bottom or back of the MAIN base. (the model sent (KX-TGFA30C) is for one of the cordless handsets/chargers).
2) Is there ANY unusual icons or text on each of the handsets?
3) If you have ANY other devices (phones, fax, etc.) attached to this same phone line and if so, are they working properly?
Please REPLY using the box below.