Sometimes clients come to my law firm sure that another person has committed a great injustice to them but without any proof on which to base their claims. When I ask them if they have any proof or document to prove that agreement which has not been fulfilled and that has damaged them the answer is no.
This doesn’t mean that you have to distrust everyone, but you have to be cautious when documenting agreements that are important to you. In Civil procedural law what cannot be proved does not exist, for which it is advisable to draft and subscribe the agreements that are made with third parties so if they do not want or cannot comply with their agreements with you, you can defend your rights.
Please note that it will be easier for a third party to break an agreement which has not been documented, than an agreement which has been signed by him, and which will serve as a basis to prove his non-fulfillment.
As we say in Spain, prevention is better than cure.