Is saying, "I paid such-and-such for the service," considered incorrect, and is demanding one's right in exchange for money wrong, under the pretext that money belongs to Allah and not to the servant?

Money belongs to Allah, and a Muslim must dispose of it according to Allah's law. However, this does not negate a person's ownership of money acquired through lawful means, and it is not permissible to take money except with the consent of its owners and through lawful transactions. Contracts and conditions agreed upon by mutual consent must be fulfilled, and it is not permissible to wrongfully consume people's wealth or break covenants. Pilgrims have the full right to demand the contents of the contract, and the company must fulfill its obligations. It is forbidden to prevent contracting parties from claiming their rights.