wells fargo bank allowed relative to have my safe deposit box drilled open carmichael California

i've had accounts and a safe depost box at wells fargo for many years.  i went in several months ago to get some items from my safe deposit box, only to be told that i no longer had a safe deposit box there.  they had no record of my ever having a box there.

the bank representative assured me they would investigate and find out what had happened.  the paperwork all had to be sent to california from the east coast, which took weeks.  it then had to be gone through piece by piece, but after 2 weeks they did find the information on my box.

turns out that my nephew came in and claimed the box was his, that he'd lost the key and paperwork.  despite his name not being on the paperwork, or being listed on the authorized signatory page, the bank told him they would have the box drilled open.  the bank never contacted me, and had my nephew return in a few days to be present when the locksmith would be there.

he was given access to the box, and stole eveerything out of it, over $15,000 in gold, jewelry, family jewelry, and so on.  the bank never could explain how that was allowed to happen,  i had to file a police report, file a notarized statement of loss, and i was told the legal department would handle it from that point.

a month later they contacted me and finally agreed to pay 2/3 of the value of my loss.   i was told i should have had insurance on the box.  i was told i had to be able to prove the items were actually mine and in the box.  half the items were inherited, so how do you prove ownership???

the fact that they screwed up didn't play into this at all, and not a single apology from the legal department.  how are they not responsible for their error?  they allowed someone with no legal right to my box to have it drilled open and cleaned out.