In the past new saber enthusiasts often confused Ultra force sabers with Ultrasabers since the names are closely similar but they are greatly different in terms of service I am surprised they are still around. Ultra force sabers are known for they crappy conversions often damaging the sabers internals doing more harm than good and using poor inferior leds. If you looked on there site it says they use luxeon leds for conversions, the luxeon leds that we use to use for lightsabers are not even produced any more and haven't been for some time!
http://www.ultraforcesabers.com/faq/force_fx_conversions So who knows what they put in that saber of yours.
Always check feedback for saber builders by asking members of any saber website.
I am sorry about you getting scammed, but I'am sure ultra sabers will be able to replace the internals of the saber just send them an email as darth tratus said and see what can be done.