When I had mine done it didn't take any effort to get a window replacement versus the seam sealer fix. The determining variable, I believe, is that I was able to point out a crack in the plastic window frame. Look at yours and see if you can find one!
**After reading more, I think you will be good for a replacement based on it being their second attempt. The TSB does mention first is sealer, second replacement. Disregard my above, my scenario was different than yours.