Auto membership upgrade - using OpenCart

Hello, I have set up my site and various membership levels to it. I have used OpenCart as the checkout and I am using Barclaycard EPDQ as the payment gateway.

The payment process all works fine and smoothly however as I am using OpenCart the database doesn't automatically trigger an account type upgrade upon payment completion - Presumably as I am using OpenCart and Barclaycard EPDQ (Opencart is hosted on my domain however it is of course nothing to do with boonex/dolphin).

I may be being stupid here, but I would have thought a small piece of code was needed for this? 

I have found membership management mods in the market but they are $100+ and it is simply this automation part i need everything else is set up and working....

Any help would be hugely appreciated guys, thank you very much in advance :)

Joe 

You could try posting in the jobs area (http://www.boonex.com/jobs/) to find someone who can write the needed integration between OpenCart and Dolphin.

There is a developer in the Market that has created an integration of OpenCart with Dolphin;  just search on OpenCart (open cart) in the market to find him.  I would contact that developer to see if they can help you with your project since they already have experience with OpenCart.