Defective Speedotron Flash Head

Years ago, I purchased a backup 206VF head new from B&H. Stupidly, I put it on the shelf without ever testing it. When I went to use it, I found out it had a defective connector. I've contacted Speedotron multiple times, sent them a dozen photos, and they refuse to accept any responsibility. The connector is obviously not damaged - it was a manufacturing defect. Any suggestions as to what to do next?