I am in the same situation (worse since I have purchased 6 standalone apps that Object Desktop provides). Also, there is NO trial version to see if the apps you can only get from OD are what you really need. I signed up and paid to downloaded the few apps I thought might be useful and found they provide nothing more than a wrapper around the apps I already have. I have contacted sales through email about a refund and have yet to hear anything.
I plan to keep my standalones but have no use for OD and would like a refund. I understand refunds are only given if there is a technical issue AND that you are supposed to use the trial before you purchase. BUT, OD has NO trial, and it provides me nothing useful over what I already have purchased. Is there anything else I need to do?