It may well be as you say. Not writing the full name or a slight variant thereof that differs from the full name given in my passport is a problem I have also had in China in a special bank transfer business after I sold my house with a piece of land somewhere in Africa. The agent had to send the money to China, I arranged that with him before departure. One of my four first names in the passport was not given in full but in an abbreviated form, and I had a lot of fuss with an incompetent bank official. I simply insisted on seeing the manager, the matter was resolved; the idiot of unwilling bank clerk was criticized by the manager in front of me, and other people around could even hear it. I even didn't have to make some noise like in the Hangzhou bank the first time. I left the bank as a winner instead of a loser, even if there was some hassle and it took a bit of my time.

That's China - and that's me! Do the same, the issue should finally be resolved if you do do it right. Success!

I'm convinced the problems I encountered @ bank emanated because the bank applied its rigid rules and regulations, and that those go beyond standard international banking procedures in terms of rigidity.