automated PIN delivery on opencart site

I'm setting up an opencart store that sell phone pins. I need a module that will deliver the pin codes to the customer via email or just shown on product confirmation page Each telephone calling card has its own unique pin code that I have in an Excel file. The module needs to work like this: When the customer purchases a calling card, the pin code will automatically be emailed or displayed to the customer. This is important as I don't want a download like an e-book. Also the module should be able to deduct the pin from the inventory so it can't be sold again. The module should also have the ability to send out an alert to me when I reach a certain level of inventory. I have one single excel file but I need multiple options for product options. Example. customer purchases $10 they receive 1 pin code customer purchases $20 they receive 2 pin codes You will also need to install the module and instruct me how to use it.