Slamming

"Slamming" is a jargon word used in telecommunications for unauthorized switching of long distance companies (i.e. if your former carrier switched you back without your consent). To prevent "slamming" it is recommended to place a "PIC Freeze" on your lines with the LEC.

This practice may involve misleading marketing or outright fraud. Prohibited by Federal law and the FCC. The FCC requires the long distance company to obtain your authorization before changing your long distance provider.