I ordered a mirror replacement for my driver's sid...

I ordered a mirror replacement for my driver's side. It doesn't fit. Rockauto will only refund the cost of the part and not the shipping because "it's not their fault." It is their fault. They should sell parts that fit. I can't contact anyone to dispute this because you can't talk to a customer service rep. You can only use online prompts. I won't be ordering through them again.