As per your illustration from the bank: you cannot compare a bank that never existed with a deity whose existence you cannot verify. Sure, if the bank never existed, the story certainly has at least an element of falsity.
In my illustration, the bank represents what evidence has been presented about God. Like the bible, different claims about events of the past. Jesus life. God is the man who goes in with his son. You can't prove these guys don't exist, just like you can't prove God and Jesus don't exist. But the bank never existed. The flood never happened. The biblical Jesus never lived. Nobody was ever healed or resurrected. You get my drift?
sure, you can't disprove God. BUT LITERALLY EVERYTHING ASSOCIATED WITH GOD HAS BEEN. God stands severely discredited, why believe it?
the entire point of God, I might add, is completely lost in a deity that is just gone and doesn't care.