Just from what you have written here it appears as if it may be an "inside" job, but by someone who knows you and not by Chase. As there are a couple of things that don't quite add up.
I noticed on September 2nd 2009 that a purchase had been made on my bank account for a couple dollars and then a large cash back obtained.
- While I don't get "cash back" that often when I can not remember ever seeing the "cash back" amount separated from the purchase amount. So how did you find this out?
When the bank card arrived in my mail box, the envelope was opened. I had a very uneasy feeling about that, so asked that the card be canceled.
- Unless this is a huge coincidence, someone who knows that you were getting a new card perhaps tried to get it again. They would also have had to have access to the envelope before you got it.
So, what is the result? Someone can steal your account info and as long as they use the same store you shop at..
- Another coincidence? That either a random person picked the same store you have shopped at in the past, or someone you knows the stores you shop at.
True thieves don't care about history. They care about getting as much as they can as quickly as they can. These coincidences along with the fact that most banks will not consider it fraud on PIN based transactions. Because they figure that you would have had to given someone your PIN number(or been negligent with it).
If you have not already done so, you need to file a Police Report. With that report they should be able to get any video of that transaction, if too much time has not passed. If you find that it was not you or someone you know you need to take that back to Chase. If you still run into trouble you can contact the Office of the Comptroller of Currently at http://www.occ.gov
I would also suggest that when you get another card regardless if they send you a new PIN or not that you change it again anyways.