Your phone company, at least my land line provider, will install a tracker/tracer on your phone if you request it. You activate it by entering a code and the phone company will capture the data for that particular phone number. They will provide the tracked information to your local police. Ask your phone supplier about nuisance/obscene calls. I have CenturyTel phone service, but I think its required of all phone service providers by the PUCO.
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