por un paquete de muñecos sylvanian de escasos 165 gr que ha enviado por correo ordinario y ha tardado 9 dias en llegar a una
abía puesto un precio (que he abonado y se niega a devolver la diferencia)

The shipping cost was clear to you from the beginning. Why did you bid if you thought the cost was too high? I will tell you why. Because you planned it. You thought that I will be afraid of your threatens for negative comments and I will return to you an amount that has already been spent for the shipping cost procedure. There is nothing to be returned, and I have already explained to you where the money was spent. The fact that you do not accept it, is another story. You should not have made an offer.