Bankers giving out information ?

Amanda💛 • Wife & Mom of 4 ....Trying to figure out the rest!
So last week my husband and I went to the bank to sign insurance documents. We both still have separate checking & banking accounts in our own names. She looked up my account to reference the account on hand. She asks me "do you know how much you have in here"? I said "yes I do, thanks"! Then she goes on to ask if I wanted her to verify how much is in the account, I said "no thank you, I don't need the amount".  Then she blurts out how much I have.  I am in no way, shape, or form hiding how much $ I have from my husband, but what if I was? 
What if I was in an abusive relationship and trying to get out(I'm not), by saving up money. 
It just bugged me, is their supposed to be any privacy? I have a meeting next week, where I need to sign more forms, should I mention anything. Maybe to help the next person out?? 
Thanks in advance!!