Thanks for your responses, and your explanation behind how the patch was delivered (it had to go with the base game). Bear in mind that I wouldn't be so upset if the first 4 episodes weren't so good. I don't even feel ripped off from the price perspective of spending $25, but more so from the time I spent to get to where I was when the save corruption occurred. Playing everything over again from the start appeals little to me, since I know what events are going transpire and am satisfied with the choices I made during my first playthrough.
I am also willing to accept some glitches in games, having played Bethesda games such as Fallout 3 and Skyrim on PS3. However, the worst I would accuse those games of is some lag here and there, or freezes that require a manual restart of the PS3. Ultimately, those games didn't have any bugs or glitches that were nearly as game-breaking or harmful as this.
Once again, thanks for your replies. In the end I may be dissatisfied, but it is better than being ignored entirely.