Maybe you're behind on paying your bills because of circumstances outside of your control. Or perhaps there's been an error in billing. Either way, these scenarios may lead to a run-in with a debt collector. Fortunately, there are strict rules in place that forbid any kind of collector harassment in the U.S. If you know your rights, you can deal with debt collection with minimal hassle. Here's what to remember:

• You have a right to details without harassment. When a debt collector calls, they must be transparent about who they are. They need to tell you: "This is an attempt to collect a debt, and any information obtained will be used for that purpose."In addition, debt collectors cannot use abusive language, or threaten you with fines or jail time. The most a debt collector can truthfully threaten you with is that failure to pay will harm your credit rating, or that they may sue you in a civil court to extract payment.

• You don't have to put up with 24/7 calls. Debt collectors may not contact you outside of "normal" hours, which are between 8 a.m. and 9 p.m. local time. They may try to call you at work, but they must stop if you tell them that you cannot receive calls there.Keep in mind that debt collectors may not talk to anyone else about your debt (other than your attorney, if you have one). They may try contacting other people, such as relatives, neighbors or employers, but it must be solely for the purpose of trying to find out your phone number, address or where you work.

• You can tell them to stop. Whether you dispute the debt or not, at any time you can send a "cease letter" to the collection agency telling them to stop making contact. You don't need to provide a specific reason. They will have to stop contact after this point, though they may still decide to pursue legal options in civil court.

• You can dispute collection. If you believe the debt is in error in whole or in part, you can send a dispute letter to the collection agency within 30 days of first contact. Ask the collector for their mailing address and let them know you are filing a dispute. They will have to cease all collection activities until they send you legal documentation verifying the debt.

If a debt collection agency is not following these rules, report them. Start with your state's attorney general office, and consider filing a complaint with the U.S. Federal Trade Commission and the Consumer Financial Protection Bureau, as well.