I find the trouble with English speaking staff at banks is, There is no guarantee they will stay at the Bank. The staff seem to move from bank to bank. We joined one Bank as we were told Alper was great. He was and we had no problems at that Bank. Then he moved banks and wrote to customers asking them to come to his new bank. We did that, after a while he moved again and once again asked us to move banks. We decided enough was enough and stayed where we were.
So, finding a Bank with someone great who speaks English, is only good if you can get a guarantee they will not move on.