Purchase rt side mirror for 91 Chevrolet Cavalier....

Purchase rt side mirror for 91 Chevrolet Cavalier. They sent the mirror and it was wrong. The part number was the same , but the mirror was wrong. They said it was what the manufactured assured them was correct. I could return with a pickup slip but I would only get credit for the part, Or I could ship back at my expense and they would credit me for part and 1/2 of shipping cost. What a rip off. They advertise the wrong part and I have to absorb the shipping. They would just put it in stock for some other unsuspecting buyer . I will just trash it. The box is marked Skyhawk and Sunbird not a Cavalier in site