First things first: You basically have 14 days to withdraw from a contract in writing if you have been informed in writing by the seller. The law only protects against unexpectedly concluded contracts and only if private individuals conclude a contract. In business-to-business (B2B) business, Section 355 of the German Civil Code does not apply. The statutory right of withdrawal for private individuals / end consumers applies to the following types of contract:
Distance sales contracts such as ordering goods from a catalog, ordering by letter, concluding a contract by telephone, email or on a website on the Internet. There are exceptions to the distance selling business and always when you order the subject of the contract in the form of software as a download. Once you've clicked the button and downloaded the software, there's no going back. The reason is that the service rendered cannot in fact be returned.
Doorstep selling: Whenever a representative surprises you and concludes a contract with you in your private apartment, you can withdraw within 14 days. Attention: If the representative announces himself by phone in advance, it is not a surprising door-to-door sale and the withdrawal period does not apply!
Insurance transactions: Consumers always have a 14-day right of withdrawal
Installment delivery contract: If you place an order that consists of recurring services, e.g. B. a delivery of 2 boxes of water every 2 weeks
Distance learning: If you enroll in a distance learning university, you generally have a 14-day right of withdrawal.