Yes, the Consumer Rights Act allows you to cancel a contract if the goods or services provided are not satisfactory. You have the right to a refund if the items are faulty or not as described. For services, if they are not performed with reasonable care and skill, you may also cancel. Make sure to inform the seller or service provider as soon as possible. For specific situations, it may be worth consulting a solicitor or checking the official gov.uk guidelines on consumer rights.