Cramming is the practice of placing unauthorized, misleading or deceptive charges on a consumer's telephone bill. Crammers rely on confusing telephone bills in an attempt to trick consumers into paying for services they did not authorize or receive, or that cost more than the consumer was led to believe.  Cramming can also occur if a local or long distance company, or another type of service provider, does not clearly or accurately describe all of the relevant charges when marketing a service.  Consumers can employ strategies to protect themselves from these unauthorized charges, and have the ability to file a complaint.