Is it permissible to take 150 Riyals in exchange for waiving a landline telephone service to a friend, knowing that the original subscription value is 300 Riyals and the money cannot be refunded by the company upon return?

The owner of a telephone line shares in the beneficial ownership of the telephone. He is permitted to use it for himself or to allow others to use it, with or without compensation, provided that this does not harm the telecommunications company or violate the agreement made with it.