Is the questioner burdened by the sin of using domestic calling cards sold for what God has forbidden, knowing that the nature of her work is to enumerate the sales of these cards and submit monthly reports thereon?

There is no blame on someone who counts communication cards, and the earned salary is lawful, unless he becomes certain that they will be used for something forbidden. It is not permissible to sell them to someone who is known with certainty to use them for something forbidden, such as backbiting or lying, for Allah Almighty says: "And cooperate in righteousness and piety, but do not cooperate in sin and aggression."