Upload & Sell: On
The serial returner(not my words) should read the B&H Return Policy. It states that "B&H reserves the right to refuse a return or charge a re-stocking fee of 15%". Therefore at B&H's sole distretion, B&H has refused your return.
Threats, swearing and bullying will only make things worse. Retailers are under no obligation to sell you anything. Maturity, manners and the absence of the "what about ME, it's all about ME and don't you know it's ME" attitude will go along way.
I'm glad you have a very sharp 24-105L lens. :-D