Central Adjustment Bureau allegedly threatened Consumer with a lawsuit, service at his office, and attachment and sale of his property in order to collect a debt, although it did not intend to carry out the threat and did not have the authority to commence litigation. On some notices sent to Consumer, Central failed to disclose that it was attempting to collect a debt. In addition, Consumer contends that Central sent notices demanding payment that were purportedly from attorneys but were written, signed, and sent by Central. Has Central violated the Fair Debt Collection Act? Explain.