Would you cancel 3,250 deal cause 16 short?

Made a deal with a guy in Germany to buy his cable for $3,250 including shipping, but because the money arrived to his account short by $16 (international wire transfer) he got upset and paid $50 to return my money back? ?? I couldn't believe it!!! even though I told him that I will send you $50 to cover any charges and even help with shipping. Granted, my bank screwed up making the wire transfer the first time around but the money got there eventually, the whole thing took two weeks. My bank charged me $40. The bad thing is I sold my cable knowing that I already bought a new one. I am so pissed, Was I at fault here? Did it happen with any of you before?