Certain prepaid lessons and services, such as dancing lessons, dating services, and health spa memberships can, under state law, be cancelled shortly after they're signed. But again, these laws apply to very few situations. If cancellation rights are not stated in the agreement, assume none exist. Signing an estimate for work may obligate you to the project. Make sure the paperwork you're signing doesn't waive your rights as a consumer or contain any unexpected surprises.
Contracts are the basis of all legal obligations.
Through negotiation, you and a company can agree to cancel a contract, but a company is usually not obligated to do so. Always check your bills for errors, scams and crams. It may be a costly habit. Whether it's an intentional scam or an honest mistake, a careful look at your bills can uncover errors. Mistakes happen, even in the most efficient computerized systems, and most reputable companies will be quick to make corrections to billing errors.