Ok time for angry eyes...

I am looking to do a fairly large purchase for this summer. Because of this I figured why not get a loan...sounds easy, right? Well I go in last wednesday and tell them what I would like to do, eventually we come to an agreement and I submit the application. Late thursday I get a call that I have been approved and because I was out with a customer I said I would be in monday to sign paperwork and get the check.
Now on to today. I show up and everything is peachy. We talk for about 20 mins and I go to sign and she asks where my co-signer is. I told her that I had said multiple times wednesday and thursday when I called in that I would not have one and that I would be doing this on my own. After a couple phone calls she informs me that I have now been denied for the loan.
Without breaking anything or screaming I politely ask why. She tells me that they don't think I would pay it back. Now I ask for a smaller loan and plan on wiping out all my savings to cover said purchase. They don't think I will pay back a $3k loan. I asked them how a person with perfect credit and making good money couldn't pay that back. Her answer was that it wasn't that I
couldn't afford to pay it back, they figured I just wouldn't.
After that I talked with her manager who also said they assume anyone under the age of 25 will not pay any sort of loan back. With that I told the national city people to lick my balls and emptied my checking and savings accounts.
Now I am sitting at work with way too much money on me and wondering what bank I should start a checking account with...