Phone rang once, then hung up.  No ID of caller but traced it here.  My phone carrier only provides call blocking if you pay a monthly fee.  What else can I do?

Panasonic has a new cordless phone that allows you to block a telephone number once you receive a call.  The next time they call,  the caller will get a busy signal.  Their numer will show on the caller ID. There are several models with this feature, and it also has a talking feature to announce who is calling. Both features are very good if you are screening nuisance calls.