um...how is it a "scam" when they're just trying to get you to pay a delinquent bill?
phone companies, credit card companies, auto creditors, etc. are not in the business of debt collection. they are in the business of providing services and financing. they sell debts they can't collect to companies whose expertise is debt collection. this is no scam, it's legitimate business.
it's people like you abusing the system, running up bills, not paying for the services you purchase, and then shirking responsbility through loopholes in the fdcpa that are sending our economy into turmoil.