Hello & Welcome to Just Answer,
Sorry I didn't see your question earlier and to hear of any issue you are having with your phones.
To help you with this issue, may I ask:
1) What is the AGE of this system?
2) How many TOTAL cordless handsets do you have with this system?3) What phone service provider (phone company) you have for this phone line?4) Is the answering system switched ON?5) What exactly happens when calls come in?
That is, does the system ring a certain number of times and then stop, or does it continue to ring and ring - until the caller hangs up?