Loss of brake pedal: This condition is usually a result of brake fluid leakage due to failure of a brake hose or a rusted metal brake line, a worn wheel cylinder or brake caliper, or a worn master cylinder. A simple once over of the system will reveal what's going on.
If you have questions about a specific purchase, it would be best to speak to an attorney who could inform you of your legal options. While there are laws that allow for a 3-day right to cancel certain purchases, these laws are very specific and do not apply in a majority of consumer purchases.
The Truth in Lending Act, the Federal Trade Commission's cooling-off rule and numerous state buyer's remorse laws offer ways to cancel some signed purchase contracts within three to five days. Although qualifying purchases vary by law, the process for legal cancellation is much the same regardless of the law that applies to a given situation.