Real sorry about your frustrating experience. I have trouble understanding how this became your fault for buying resale. The CM acknowledges the borrowing worked FINE UNTIL
DVC themselves, introduced the 'glitch' with the 50% restriction. I hope you at least got whatever borrowing task you needed complete.
I have my own resale borrowing situation coming up, and I fully expect (thanks to these threads) the possibility of a 'glitch' and waiting a couple of hours of to talk a CM. When I do talk to a CM, I expect them to simply help me with my request with no drama/finger pointing/resale commentary.