In the pantheon of Asian banks I've dealt with, Singaporean ones are right at the very bottom, along with Japanese ones. HK banks also suck compared to UK banks but SG banks are a whole new level of terribleness.
I couldn't get rid of my UOB mortgage and account quickly enough. Then they had the absolute fucking temerity to charge me for their lawyers to wind up my mortgage. Another fucking classic was a percentage fee on an international transfer (no FX involved). That was really nasty.