Which of the following is NOT allowed in telemarketing according to established rules?

Telemarketing regulations are established to protect consumers from unwanted calls and to ensure their preferences are respected. According to these regulations, making calls before 8 am is not allowed. This rule aims to ensure that consumers are not disturbed at inappropriate hours, promoting a reasonable time frame for telemarketing activities.

The allowed practices include making calls at 8 am or after, which is considered an acceptable hour for outreach. Additionally, allowing customers to opt out of future telemarketing calls gives them control over their communication preferences, aligning with consumer protection principles. Providing customer support after hours does not violate telemarketing rules, as it pertains to customer service rather than solicitation. Thus, making calls before 8 am is the only option that directly contravenes these established rules.