Sorry to hear you were scammed. The shortcut you are clicking is apparently starting up a popular program called DVDShrink. This program is freeware. It is often considered one of the best programs at compressing DVDs, and is most often used to help fit a standard "dual layer" DVD that you have bought onto a DVD-R or DVD+R DVD that is only a single layer disc. It is also a "ripping tool." And, it can be used to do some basic "reauthoring," especially where you would like to delete some of the extras, unneeded soundtracks, subtitles, etc., so that it is easier to fit the content onto a single disc.
It is 100% free. You can find dozens of locations all around the web where you could download it, probably in less than 10 minutes, in most cases (maybe even less than a minute, depending on your type of internet connection.)
The author is no longer updating this program in any way. It has been widely reported that he was hired away by Nero to work on some of their programs, and of course this may have included an employment clause that forced him to simply abandon his creation. Still, it remains very popular, and is widely used, and freely available.
Curious side-point to all of this... DVDShrink has no burning capabilities. It can rip, but it cannot actually burn, on its own. However, it does have a popular feature where it can automatically start another burning program, and automatically begin the burning process, to make the entire procedure more of a "user friendly one-click" procedure. It can only do this with two programs though...
1- Nero Burning Rom, which is a commercial "paid" program
2 - DVDDecrypter which is another popular freeware program.
So, I am wondering... did this jerk include a copy of Nero Burning Rom with your purchase (which would be as illegal as hell, of course, and Nero could go after him the instant they decided it was worth it to pursue this, or that it was important enough to pursue this, and make his life a lot less friendly...)
Or, did he include a copy of the freeware program, DVDDecrypter, which is another program where the author has had to abandon any future updates, due to his own legal situation. If this is the case, he is probably thinking neither author would ever bother to come after him, since they have both had to "give up" on their own creation, and basically abandon them.
If it were me, I would begin to try to get every penny of my money back. I hate getting scammed.