What are the laws in the US for the sale of financial products? In the UK, the principle that applies is caveat vendor - meaning it is the responsibility of the seller to adequately set out the information you need in order to decide whether or not to buy a financial product such as insurance - and to be able to demonstrate that they have done so. They also need to inform you of your right to a statutory cooling off period of 14 days, during which you can cancel without penalty.
This might be an avenue worth exploring if similar consumer protections apply.