Final answer:
The Federal Trade Commission (FTC) is the best agency to assist with the problem of unwanted telemarketing calls. It enforces regulations to protect consumers from fraud and deceptive business practices, including those related to telemarketing.
Step-by-step explanation:
If you're receiving unwanted calls from companies at 9 p.m. asking you to buy their products, the correct agency to assist you with this problem is the Federal Trade Commission (FTC).
The FTC is known for dealing with issues that affect the economic life of every American, including protecting consumers from fraud and deceptive business practices.
The FTC also enforces regulations against such practices and can take action against companies violating telemarketing rules.
The Federal Communications Commission (FCC) also works closely with the FTC to regulate communication technology and protect consumers from unwanted calls.
While they supervise instant communication technology, when it comes to enforcement on companies who might be violating telemarketing rules, the FTC is the more appropriate agency.