This article is the result of the research project “Interpretation and Application of Private Law” that has been carried out by the Study Group on private law in Pontificia Universidad Javeriana. This article analyses firstly the way the changes around the traditional contract theory and the development of new contractual forms such as contracts of adhesion that can cause abuse of rights against the adherent. Hence the need to look through the solutions that have been adopted in Colombia and elsewhere. In a second part, we revise the user’s protection regime in telecommunications, as a special regulation created to eliminate the breach between the operators and the users. Even though the regulation protects many aspects, most of it refers to contractual relationships, due to the lack of a general regulation of contracts of adhesion in Colombia.