I bought an alternator for my 1996 M3. Took a few ...

I bought an alternator for my 1996 M3. Took a few days to get because it is directly from Bosch. That is fine. I take apart the supercharger etc to get the old one out. Put the new one in and notice it doesnt have threads on the mounting ear. So I call and have the "Pleasant" experience of talking to customer service. I talk to the first person Suzanne. I tell her the situation and she says since it is from an outside source that they have to put an inquiry in to see if it is supposed to have threads. So I say that I am screwed out of a car for two weeks while they figure that out. She says let me get the manager. So here comes the fun part. I talk to this useless guy named Shaun. I tell him my situation and he says either it is a defect or the wrong packaged part and also goes into the inquiry schpeal. I again say "Well due to your companies mistake I get to be the one to suffer?" I am either out of a car for weeks or I get to pay more money (as far as I am concerned I havent gotten anything for my 270 dollars yet). So I say can you send a call tag to get the old one picked up and send out a different one. Anything. Something that would work. He said no. That I have to take it to a fedex place. In what the car that doesnt work due to your company. I said well since this is a mistake on your part can you do a discount since so much money is already in limbo with no results. I told him that they probably make forty percent so a twenty percent discount would be fair. So then he feels he has to tell me how a business is run(I am a small business owner). So I ask for his boss. He says he doesnt answer to anyone. So I ask if he owns the company, he says no. So I ask him who the general manager is, who he answers to he say no one. So I ask for his name and he says Shaun. I ask for last name or initial he says I am only one who spells it that way. I ask him for last name again and he refuses. Not the way to run a business and this shaun guy is useless and cant manage anything. I wont be telling any of my friends to use Rock auto. I used to tell everyone. Shaun changed that.