They repeatedly sent me the wrong part for my Chev...

They repeatedly sent me the wrong part for my Chevy Silverado. I explained the way the part fits, gave them the requested VIN number, year, even the actual part number and pictures of the fittings. The part they sent uses the modern quick connect fittings. My truck is an earlier model that uses threaded connectors. They told me I have to pay $50 shipping on the part to return it. Will not be buying from them again and definitely not recommending them for anything more than very basic parts like windshield wipers and filters. Completely lacking in technical knowledge and automotive repair competency. Really disappointing.