It depends. On occasion, a consumer gets pressured into making a buying decision. However, most states favor the view that purchases should be made voluntarily. In response to high-pressure sales tactics many states have enacted what is called a “cooling off” period in favor of the consumer.
This means the consumer is afforded the protection of cooling down from the pressure of the sale. Usually the cooling off grace period is limited to a short period of time like two or three days after the sale was made.
Under Federal law, depending on the type of product or transaction, the consumer will have until midnight of the third business day after the contract was signed to cancel. For the law in your state, it is strongly advised that you consult with a lawyer immediately.