Carosel Checks Never recieved checks ordered Internet

I ordered checks. Got the invoice paid for. The other thing that I got was email stating items were being mailed and could track them. So I did. The day the USPS site said they were delivered and that a notice had been left I got home and no notice they had been left. I called the post office who claimed they had the checks. I asked the post office to hold the checks and I would be in to pick them up on my day off. A matter of three days. When I went into the post office the package could not be found. I went from the post office to my bank and closed my account. Still no checks.