The law gives you a deadline to withdraw from the contract you signed, we talk about withdrawal period. It is 10 days from the day after the first presentation of the registered letter.
You can revoke your consent, at its discretion and without penalty.
If you paid a security deposit , real estate agent or notary, custodian of the funds, you must return them within a maximum of 21 days. This period runs from the day after the date of withdrawal.