CoolSculpting is a great procedure but it is important to remember that gaining weight after the procedure can directly effect your results. I would return to your treating physician and ask to compare your before and after photos to evaluate your results.
CoolSculpting by Zeltiq provides training for the procedure. They will provide certification for the practice. It is best to find a board certified dermatologist with experience in CoolSculpting for the best cosmetic results.
"Love handles" can sometimes be a hard area to define when looking for an exact placement of the applicator. There are fat pockets around the waist that sit differently on people. It is important to talk with your provider during your consultation about what areas are your concern...