Statement of Account

Well the bank is looking even worse this morning. I got a statement in the post and it appears they have lost 3000 Euros!
I have a mortgage with the bank and the arrangement is that I inform the bank that an invoice needs paying and they credit the money into my current account (from the mortgage amount) and then pay the invoice out of my current account.
So with these payments messed up by the bank they seem to have messed up again. They credited my account with 103386.39 but made two payments totalling 106386.39
So I am down 3000 Euros.
I looked at the balance and thought, "What ??? where has all the money gone?" The bank tries to nickel and dime you to death at the best of times but 3000 is a bit much to swallow.
So I am on to the bank again and I am quite interested to hear what they have to say. I do hope this is their mistake, maybe I have run out of money!
No, I don't think so there should be about 53000 or so left. That has got to cover the roof, the windows, doors and the internal T&G.