Costly Mistake

First off, I'd like to start out my experience by saying that unfortunately I had a bad experience. This is my first time going to a bank carrying such a huge amount of money. I have several deposits but none were as much as this and which all of it went smoothly. I was hoping that this would be the same as my last visit but unfortunately it was not.
It all began a few months ago. I was heading to the bank nearest to my house excited to deposit my money to the bank. I really wanted to get this deposit safely done so my friend and I walked a few steps just to reach the bank as quickly as possible. I couldn't wait! I walked as fast as I could and entered the bank, I asked the lady about some information regarding the deposition of quite a huge sum of money. The interest rate was not bad at all, at the moment I decided to put the money in the back. She told me that t...