Tactics that are not permitted:

The debt collector cannot repeatedly call you.
If you request that collectors do not call you at work, they must stop.
Collectors cannot use foul language or threaten a consumer with violence, seizure of assets, or imprisonment. They cannot use language that is insulting, discriminatory or belittling.
Without obtaining your permission, collectors [...]

When a collector contacts you, at some point in the conversation they must advise you that they are calling from a collection agency. They are required to identify the name of the original creditor and the amount of the balance on the account that is being collected upon. This is important because it allows you [...]

You are protected by The Fair Debt Collection Practices Act, which is the federal law that protects consumers from harassment and abusive collection practices. The Fair Debt Collection Practices Act applies to collection efforts that are employed by persons other than the original creditor “that regularly collect debts owed to others.” The FDCPA applies to [...]