A method for a software application is used to intercept unwanted phone calls or text messages for a cellular phone. The software application allows a user to manage their blacklist, which contain contacts that the user does not want to communicate with. When the software application receives an incoming or outgoing communication with a telephone number, the software application will compare that telephone number with the telephone numbers of the contacts on the blacklist. If the telephone number of the incoming or outgoing communication matches one of the telephone numbers in blacklist, the incoming or outgoing communication is blocked from its intended destination. The software application will then send an audio or textual intercept message to the sender of the incoming or outgoing communication.