When Michael calls Natalie, she calls the bank manager "Tipton." The rest of the time and in the end credits, his name is "Tickton."
Mr. Tickton: I'm sorry, we're taking everything.
Natalie: But that's impossible, I won't let you! I won't! I'm young, my whole life is ahead of me!
Mr. Tickton: You call this dull existence life? This is nothing. Up there, a million light years, that's where life is. Full and beautiful. The greatest civilization ever created is moving toward oblivion and nothing can save it but time, time, time!