1) Was it a "couple of weeks ago" or "several months ago". Two entirely different time frames you mentioned in two different posts.
2) You might have screwed yourself. You admitted to "light duelling" when in fact, it plainly states in the warning that they are not to be duelled with. Everyone KNOWS what people are doing to do with them, but because you chose to do something against the warning label, they have no liability. I think this was a smart move on MRs part. Imagine how much money they would have lost had they NOT included that in the package. People trying to return the sabers for all sorts of reasons.
At this point, if Amy or someone from MR is able to help you out, I'd consider it a BLESSING and not something owed to you. Not trying to sound like a jerk, but unfortunately with the admission of duelling, you kind of hosed yourself. Plus the fact that you aren't really clear as to HOW long you've had the saber. ???